2021–22 Boston Celtics season explained

Team:	Boston Celtics
Divisionwin:	yes
Conferencewin:	Yes
End Year:	2022
Wins:	51
Losses:	31
Division:	Atlantic
Division Place:	1
Conf Place:	2
Coach:	Ime Udoka
Gm:	Brad Stevens
Owners:	Wyc Grousbeck
Arena:	TD Garden
Playoffs:	NBA Finals (lost to Warriors 2–4)
Bbr Team:	BOS
Television:	NBC Sports Boston
Radio:	WBZ-FM

The 2021–22 Boston Celtics season was the 76th season of the franchise in the National Basketball Association (NBA). Following the Celtics' first-round exit to the Brooklyn Nets in five games from the previous season, Danny Ainge retired from his role as General Manager, and Brad Stevens was promoted to be the next President of Basketball Operations.^[1] The Celtics then hired Brooklyn Nets assistant Ime Udoka as the next head coach on June 28, 2021, in what was his only season as head coach before being suspended for violating team rules in September 2022 and later being replaced midway through the 2022–23 season.^[2]

The Celtics began the season with an 18–21 record but began a turnaround in January and finished with a 51–31 record and the #2-seed in the Eastern Conference.^{[3] [4] [5]} With the Portland Trail Blazers missing the playoffs for the first time since 2013, the Celtics now hold the longest active playoff streak, with consecutive appearances since 2015.^[6] They won the Atlantic Division for the first time since 2017. Multiple Celtics received NBA honors during the season. Jayson Tatum was selected to the All-NBA First Team and was named Eastern Conference Finals MVP, while Marcus Smart was named NBA Defensive Player of the Year and Robert Williams III joined him on the NBA All-Defensive Team.

In the first round of the playoffs, the Celtics swept the Brooklyn Nets in four games, which was their third series sweep in four seasons. In the second round, they faced the defending champion Milwaukee Bucks for the third time in five seasons and defeated them in seven games.^[7] In the final game of the series, the Celtics made 22 3-pointers, a record for the most ever in a Game 7. The Celtics then advanced to the Eastern Conference Finals for the fourth time in six years to face the top-seeded Miami Heat. In the previous two Conference finals matchups between the two teams, the Celtics lost both times: in 2012 in seven games and in 2020 in six. This time, they beat the Heat in seven games—including three wins on the road—to advance to the 2022 NBA Finals, their first Finals appearance since 2010. The Celtics faced the Golden State Warriors in a rematch of the 1964 Finals in an attempt to win their 18th championship and first since 2008, but lost in six games despite taking a 2–1 lead.^[8]

Draft picks

See main article: 2021 NBA draft.

The Celtics currently carry one second-round pick in the draft.^[9]

Standings

Conference

Game log

Preseason

|-style="background:#cfc;"| 1| October 4| Orlando| | Jaylen Brown (25)| Jayson Tatum (9)| Payton Pritchard (5)| TD Garden
19,156| 1–0|-style="background:#cfc;"| 2| October 9| Toronto| | Jayson Tatum (20)| Enes Kanter (10)| Smart, Tatum (9)| TD Garden
19,156| 2–0|-style="background:#fcc;"| 3| October 13| @ Orlando| | Aaron Nesmith (23)| Robert Williams III (7)| Nesmith, G. Williams (4)| Amway Center
13,519| 2–1|-style="background:#fcc;"| 4| October 15| @ Miami| | Jayson Tatum (23)| Jayson Tatum (8)| Dennis Schröder (6)| FTX Arena
19,600| 2–2

Regular season

|-style="background:#fcc;"| 1| October 20| @ New York| | Jaylen Brown (46)| Jayson Tatum (11)| Brown, Smart (6)| Madison Square Garden
19,812| 0–1|-style="background:#fcc;"| 2| October 22| Toronto| | Jayson Tatum (18)| Al Horford (11)| Marcus Smart (5)| TD Garden
19,156| 0–2|-style="background:#cfc;"| 3| October 24| @ Houston| | Jayson Tatum (31)| Al Horford (10)| Schröder, Smart (5)| Toyota Center
16,069| 1–2|-style="background:#cfc;"| 4| October 25| @ Charlotte| | Jayson Tatum (41)| Robert Williams III (16) | Schröder, Tatum (8) | Spectrum Center
17,238| 2–2|-style="background:#fcc;"| 5| October 27| Washington| | Jayson Tatum (23)| Horford, Williams (11)| Dennis Schroder (6)| TD Garden
19,156| 2–3|-style="background:#fcc;"| 6| October 30| @ Washington| | Jaylen Brown (34)| Jayson Tatum (15)| Dennis Schröder (9)| Capital One Arena
15,813| 2–4|-style="background:#fcc;"| 7| November 1| Chicago| | Jaylen Brown (28)| Al Horford (10)| Dennis Schröder (5)| TD Garden
19,156| 2–5|-style="background:#cfc;"| 8| November 3| @ Orlando| | Jaylen Brown (28)| Al Horford (12)| Al Horford (7)| Amway Center
12,735| 3–5|-style="background:#cfc;"| 9| November 4| @ Miami| | Jaylen Brown (17)| Robert Williams III (10)| Dennis Schröder (6)| FTX Arena
19,600| 4–5|-style="background:#fcc;"| 10| November 6| @ Dallas| | Jayson Tatum (32)| Jayson Tatum (11)| Smart, Schröder (6)| American Airlines Center
20,052| 4–6|-style="background:#cfc;"| 11| November 10| Toronto| | Jayson Tatum (22)| Robert Williams III (13)| Jayson Tatum (7)| TD Garden
19,156| 5–6|-style="background:#cfc;"| 12| November 12| Milwaukee| | Dennis Schröder (38)| Robert Williams III (10)| Marcus Smart (6)| TD Garden
19,156| 6–6|-style="background:#fcc;"| 13| November 13| @ Cleveland| | Dennis Schröder (28)| Robert Williams III (16)| Marcus Smart (8)| Rocket Mortgage FieldHouse
19,432| 6–7|-style="background:#cfc;"| 14| November 15| @ Cleveland| | Jayson Tatum (23)| Al Horford (9)| Smart, Tatum (5)| Rocket Mortgage FieldHouse
17,186| 7–7|-style="background:#fcc;"| 15| November 17| @ Atlanta| | Jayson Tatum (34)| Jayson Tatum (9)| Marcus Smart (11)| State Farm Arena
16,445| 7–8|-style="background:#cfc;"| 16| November 19| L.A. Lakers| | Jayson Tatum (37)| Jayson Tatum (11)| Schröder, Smart (6)| TD Garden
19,156| 8–8|-style="background:#cfc;"| 17| November 20| Oklahoma City| | Jayson Tatum (33)| Al Horford (11)| Marcus Smart (8)| TD Garden
19,156| 9–8|-style="background:#cfc;"| 18| November 22| Houston| | Jayson Tatum (30)| Robert Williams III (15)| Marcus Smart (5)| TD Garden
19,156| 10–8|-style="background:#fcc;"| 19| November 24| Brooklyn| | Marcus Smart (20)| Jayson Tatum (8)| Marcus Smart (8)| TD Garden
19,156| 10–9|-style="background:#fcc;"| 20| November 26| @ San Antonio| | Jayson Tatum (24)| Jayson Tatum (12)| Marcus Smart (8)| AT&T Center
15,360| 10–10|-style="background:#cfc;"| 21| November 28| @ Toronto| | Marcus Smart (21)| Al Horford (11)| Jayson Tatum (10)| Scotiabank Arena
19,800| 11–10|-style="background:#cfc;"| 22| December 1| Philadelphia| | Jayson Tatum (26)| Jayson Tatum (16)| Marcus Smart (8)| TD Garden
19,156| 12–10|-style="background:#fcc;"| 23| December 3| @ Utah| | Jayson Tatum (37)| Horford, Tatum (6) | Al Horford (9)| Vivint Arena
18,306| 12–11|-style="background:#cfc;"| 24| December 4| @ Portland| | Schröder, Tatum (31)| Enes Freedom (15)| Dennis Schröder (8)| Moda Center
18,193| 13–11|-style="background:#fcc;"| 25| December 7| @ L.A. Lakers| | Jayson Tatum (34)| Horford, Tatum (8)| Marcus Smart (6)| Staples Center
18,997| 13–12|-style="background:#fcc;"| 26| December 8| @ L.A. Clippers| | Jayson Tatum (29)| Jayson Tatum (10)| Dennis Schröder (8)| Staples Center
17,064| 13–13|-style="background:#fcc;"| 27| December 10| @ Phoenix| | Jayson Tatum (24)| Langford, Tatum (7)| Horford, Pritchard, Schröder, Tatum (4) | Footprint Center
17,071| 13–14|-style="background:#cfc;"| 28| December 13| Milwaukee| | Jayson Tatum (42)| G. Williams, R. Williams III (7)| Marcus Smart (11)| TD Garden
19,156| 14–14|-style="background:#fcc;"| 29| December 17| Golden State| | Jayson Tatum (27)| Robert Williams III (11)| Marcus Smart (8)| TD Garden
19,156| 14–15|-style="background:#cfc;"| 30| December 18| New York| | Josh Richardson (27)| Jayson Tatum (9)| Brown, Smart (5)| TD Garden
19,156| 15–15|-style="background:#fcc;"| 31| December 20| Philadelphia| | Jaylen Brown (30)| Enes Freedom (11)| Jayson Tatum (6)| TD Garden
19,156| 15–16|-style="background:#cfc;"| 32| December 22| Cleveland| | Jaylen Brown (34) | Robert Williams III (11)| Robert Williams III (7)| TD Garden
19,156| 16–16|-style="background:#fcc;"| 33| December 25| @ Milwaukee| | Brown, Tatum (25)| Robert Williams III (14)| Marcus Smart (7)| Fiserv Forum
17,341| 16–17|-style="background:#fcc;"| 34| December 27| @ Minnesota| | Jaylen Brown (26)| Robert Williams III (11) | Horford, Pritchard (6)| Target Center
15,962| 16–18|-style="background:#fcc;"| 35| December 29| L.A. Clippers| | Jaylen Brown (30)| Robert Williams III (14)| Al Horford (8)| TD Garden
19,156| 16–19|-style="background:#cfc;"| 36| December 31| Phoenix| | Brown, Smart (24)| Brown, Williams III (11)| Robert Williams III (10)| TD Garden
19,156| 17–19|-style="background:#cfc;"| 37| January 2| Orlando| | Jaylen Brown (50)| Jaylen Brown (11)| Schröder, Smart (7)| TD Garden
19,156| 18–19|-style="background:#fcc;"| 38| January 5| San Antonio| | Jaylen Brown (30)| Robert Williams III (9)| Marcus Smart (6)| TD Garden
19,156| 18–20|-style="background:#fcc;"| 39| January 6| @ New York| | Jayson Tatum (36)| Robert Williams III (9)| Jayson Tatum (9)| Madison Square Garden
17,529| 18–21|-style="background:#cfc;"| 40| January 8| New York| | Jaylen Brown (22)| Jaylen Brown (11)| Jaylen Brown (11)| TD Garden
19,156| 19–21|-style="background:#cfc;"| 41| January 10| Indiana| | Jaylen Brown (26)| Jaylen Brown (15)| Jaylen Brown (6)| TD Garden
19,156| 20–21|-style="background:#cfc;"| 42| January 12| @ Indiana| | Jaylen Brown (34)| Robert Williams III (9)| three players 4| Gainbridge Fieldhouse
13,560| 21–21|-style="background:#fcc;"| 43| January 14| @ Philadelphia| | Jaylen Brown (21)| Robert Williams III (14)| Jayson Tatum (5)| Wells Fargo Center
20,444| 21–22|-style="background:#cfc;"| 44| January 15| Chicago| | Jayson Tatum (23)| Robert Williams III (13)| Dennis Schröder (8)| TD Garden
19,156| 22–22|-style="background:#cfc;"| 45| January 17| New Orleans| | Jayson Tatum (27)| Brown, Tatum (8)| Dennis Schröder (9)| TD Garden
19,156| 23–22|-style="background:#fcc;"| 46| January 19| Charlotte| | Dennis Schröder (24)| Al Horford (10)| Jaylen Brown (6)| TD Garden
19,156| 23–23|-style="background:#fcc;"| 47| January 21| Portland| | Jayson Tatum (27)| Tatum, Williams III (10)| Jayson Tatum (7)| TD Garden
19,156| 23–24|-style="background:#cfc;"| 48| January 23| @ Washington| | Jayson Tatum (51)| Brown, Tatum (10)| Jayson Tatum (7)| Capital One Arena
16,371| 24–24|-style="background:#cfc;"| 49| January 25| Sacramento| | Jayson Tatum (36)| Robert Williams III (17)| Marcus Smart (7)| TD Garden
19,156| 25–24|-style="background:#fcc;"| 50| January 28| @ Atlanta| | Jaylen Brown (26)| Jaylen Brown (12) | Jayson Tatum (4)| State Farm Arena
16,932| 25–25|-style="background:#cfc;"| 51| January 29| @ New Orleans| | Jayson Tatum (38)| Robert Williams III (16)| Marcus Smart (12)| Smoothie King Center
16,168| 26–25|-style="background:#cfc;"| 52| January 31| Miami| | Jaylen Brown (29)| Jayson Tatum (12)| Marcus Smart (7)| TD Garden
19,156| 27–25|-|-style="background:#cfc;"| 53| February 2| Charlotte| | Josh Richardson (23)| Al Horford (12)| Jayson Tatum (9)| TD Garden
19,156| 28–25|-style="background:#cfc;"| 54| February 4| @ Detroit| | Jayson Tatum (24) | Robert Williams III (11)| Marcus Smart (6)| Little Caesars Arena
17,584| 29–25|-style="background:#cfc;"| 55| February 6| @ Orlando| | Jaylen Brown (26)| Al Horford (11)| Jayson Tatum (7)| Amway Center
14,402| 30–25|-style="background:#cfc;"| 56| February 8| @ Brooklyn| | Brown, Smart (22)| Enes Freedom (12)| Jaylen Brown (9)| Barclays Center
17,732| 31–25|-style="background:#cfc;"| 57| February 11| Denver| | Jayson Tatum (24) | Robert Williams III (16)| Marcus Smart (7) | TD Garden
19,156| 32–25|-style="background:#cfc;"| 58| February 13| Atlanta| | Jayson Tatum (38) | Robert Williams III (14)| Marcus Smart (7)| TD Garden
19,156| 33–25|-style="background:#cfc;"| 59| February 15| @ Philadelphia| | Jaylen Brown (29)| Jayson Tatum (12)| Payton Pritchard (7)| Wells Fargo Center
20,960| 34–25|-style="background:#fcc;"| 60| February 16| Detroit| | Jaylen Brown (31)| Al Horford (7)| Al Horford (7)| TD Garden
19,156| 34–26|- align="center"| colspan="9" style="background:#bbcaff;" | All-Star Break|-style="background:#cfc;"| 61| February 24| @ Brooklyn| | Jayson Tatum (30) | Al Horford (13)| Jaylen Brown (6)| Barclays Center
17,986| 35–26|-style="background:#cfc;"| 62| February 26| @ Detroit| | Jaylen Brown (27) | Jayson Tatum (11)| Marcus Smart (7)| Little Caesars Arena
19,122| 36–26|-style="background:#fcc;"| 63| February 27| @ Indiana| | Jayson Tatum (24) | Robert Williams III (11)| Jaylen Brown (8)| Gainbridge Fieldhouse
16,872| 36–27|-style="background:#cfc;"| 64| March 1| Atlanta| | Jayson Tatum (33)| Robert Williams III (13)| Jayson Tatum (7)| TD Garden
19,156| 37–27|-style="background:#cfc;"| 65| March 3| Memphis| | Jayson Tatum (37)| Al Horford (15)| Marcus Smart (12)| TD Garden
19,156| 38–27|-style="background:#cfc;"| 66| March 6| Brooklyn| | Jayson Tatum (54)| Robert Williams III (8)| Marcus Smart (9)| TD Garden
19,156| 39–27 |-style="background:#cfc;"| 67| March 9| @ Charlotte| | Jayson Tatum (44)| Robert Williams III (11)| Marcus Smart (9)| Spectrum Center
18,086| 40–27|-style="background:#cfc;"| 68| March 11| Detroit| | Jayson Tatum (31)| Robert Williams III (9)| Jayson Tatum (6)| TD Garden
19,156| 41–27|-style="background:#fcc;"| 69| March 13| Dallas| | Jayson Tatum (21) | Jayson Tatum (11)| Brown, Smart, Tatum (4)| TD Garden
19,156| 41–28|-style="background:#cfc;"| 70| March 16| @ Golden State| | Jayson Tatum (26)| Jayson Tatum (12)| Marcus Smart (8)| Chase Center
18,064| 42–28|-style="background:#cfc;"| 71| March 18 | @ Sacramento| | Jayson Tatum (32)| Al Horford (9)| Payton Pritchard (8)| Golden 1 Center
15,313| 43–28|-style="background:#cfc;"| 72| March 20| @ Denver| | Jayson Tatum (30)| Robert Williams III (9)| Jayson Tatum (7)| Ball Arena
19,602| 44–28|-style="background:#cfc;"| 73| March 21| @ Oklahoma City| | Jayson Tatum (36)| Grant Williams (10)| Al Horford (7)| Paycom Center
15,345| 45–28|-style="background:#cfc;"| 74| March 23| Utah| | Jaylen Brown (26)| Robert Williams III (10)| Marcus Smart (13)| TD Garden
19,156| 46–28|-style="background:#cfc;"| 75| March 27| Minnesota| | Jayson Tatum (34)| Jaylen Brown (10)| Marcus Smart (7)| TD Garden
19,156| 47–28|-style="background:#fcc;"| 76| March 28 | @ Toronto| | Marcus Smart (28)| Marcus Smart (10)| Derrick White (8)| Scotiabank Arena
19,800| 47–29|-style="background:#fcc;"| 77| March 30| Miami| | Jaylen Brown (28)| Al Horford (15)| Marcus Smart (8)| TD Garden
19,156| 47–30|-|-style="background:#cfc;"| 78| April 1| Indiana| | Jaylen Brown (32)| Al Horford (10)| Jaylen Brown (7)| TD Garden
19,156| 48–30|-style="background:#cfc;"| 79| April 3| Washington| | Jaylen Brown (32)| Al Horford (8)| Smart, Tatum (7)| TD Garden
19,156| 49–30|-style="background:#cfc;"| 80| April 6| @ Chicago| | Jaylen Brown (25)| Al Horford (10)| Jayson Tatum (8)| United Center
21,095| 50–30|-style="background:#fcc;"| 81| April 7| @ Milwaukee| | Marcus Smart (29)| Jaylen Brown (10)| Jaylen Brown (11)| Fiserv Forum
18,046| 50–31|-style="background:#cfc;"| 82| April 10| @ Memphis| | Jayson Tatum (31)| Daniel Theis (10)| Marcus Smart (6)| FedExForum
17,441| 51–31

Playoffs

See main article: 2022 NBA playoffs. |-style="background:#cfc;"| 1| April 17| Brooklyn| | Jayson Tatum (31)| Al Horford (15)| Jayson Tatum (8)| TD Garden
19,156| 1–0|-style="background:#cfc;"| 2| April 20| Brooklyn| | Jaylen Brown (22)| Tatum, Horford, Theis, Williams (6)| Jayson Tatum (10)| TD Garden
19,156| 2–0|-style="background:#cfc;"| 3| April 23| @ Brooklyn| | Jayson Tatum (39)| White, Theis (6)| Tatum, Smart (6)| Barclays Center
18,175| 3–0|-style="background:#cfc;"| 4| April 25| @ Brooklyn| | Jayson Tatum (29)| Jaylen Brown (8)| Marcus Smart (11)| Barclays Center
18,099| 4–0|-style="background:#fcc;"| 1| May 1| Milwaukee| | Jayson Tatum (21)| Al Horford (10)| Smart, Tatum (6)| TD Garden
19,156| 0–1|-style="background:#cfc;"| 2| May 3| Milwaukee| | Jaylen Brown (30)| Al Horford (11)| Jayson Tatum (8)| TD Garden
19,156| 1–1|-style="background:#fcc;"| 3| May 7| @ Milwaukee| | Jaylen Brown (27)| Al Horford (16)| Al Horford (5)| Fiserv Forum
17,736| 1–2|-style="background:#cfc;"| 4| May 9| @ Milwaukee| | Horford, Tatum (30)| Jayson Tatum (13)| Marcus Smart (8)| Fiserv Forum
17,505| 2–2|-style="background:#fcc;"| 5| May 11| Milwaukee| | Jayson Tatum (34)| Brown, Horford (8)| Brown, Horford, White (6)| TD Garden
19,156| 2–3|-style="background:#cfc;"| 6| May 13| @ Milwaukee| | Jayson Tatum (46)| Al Horford (10)| Marcus Smart (7)| Fiserv Forum
17,681| 3–3|-style="background:#cfc;"| 7| May 15| Milwaukee| | Grant Williams (27)| Al Horford (10)| Marcus Smart (10)| TD Garden
19,156| 4–3|-style="background:#fcc;"| 1| May 17| @ Miami| | Jayson Tatum (29)| Jaylen Brown (10)| Jayson Tatum (6)| FTX Arena
19,774| 0–1|-style="background:#cfc;"| 2| May 19| @ Miami| | Jayson Tatum (27)| Marcus Smart (9)| Marcus Smart (12)| FTX Arena
20,100| 1–1|-style="background:#fcc;"| 3| May 21| Miami| | Jaylen Brown (40)| Al Horford (14)| Marcus Smart (7)| TD Garden
19,156| 1–2|-style="background:#cfc;"| 4| May 23| Miami| | Jayson Tatum (31) | Al Horford (13)| Derrick White (6)| TD Garden
19,156| 2–2|-style="background:#cfc;"| 5| May 25| @ Miami| | Jaylen Brown (25)| Jayson Tatum (12) | Jayson Tatum (9) | FTX Arena
19,819| 3–2|-style="background:#fcc;"| 6| May 27| Miami| | Jayson Tatum (30)| Horford Tatum (9)| Brown, Horford, White (5)| TD Garden
19,156| 3–3|-style="background:#cfc;"| 7| May 29| @ Miami| | Jayson Tatum (26)| Al Horford (13)| Brown Tatum (6)| FTX Arena
20,200| 4–3|-style="background:#cfc;"| 1| June 2| @ Golden State| | Al Horford (26)| Jaylen Brown (7)| Jayson Tatum (13) | Chase Center
18,064| 1–0|-style="background:#fcc;"| 2| June 5| @ Golden State| | Jayson Tatum (28)| Al Horford (8)| Marcus Smart (5)| Chase Center
18,064| 1–1|-style="background:#cfc;"| 3| June 8| Golden State| | Jaylen Brown (27)| Robert Williams III (10)| Jayson Tatum (9)| TD Garden
19,156| 2–1|-style="background:#fcc;"| 4| June 10| Golden State| | Jayson Tatum (23)| Robert Williams III (12)| Jayson Tatum (6)| TD Garden
19,156| 2–2|-style="background:#fcc;"| 5| June 13| @ Golden State| | Jayson Tatum (27)| Jayson Tatum (10)| Tatum, Brown (4)| Chase Center
18,064| 2–3|-style="background:#fcc;"| 6| June 16| Golden State| | Jaylen Brown (34)| Al Horford (14)| Marcus Smart (9)| TD Garden
19,156| 24

Player statistics

Regular season

|- | style="text-align:left;"|| 77 || 21 || 24.4 || .475 || .411 || .905 || 3.6 || 1.0 || .5 || .7 || 7.8|- | style="text-align:left;"|| 76 || 76 || 35.9 || .453 || .353 || .853 || 8.0 || 4.4 || 1.0 || .6 || 26.9|- | style="text-align:left;"|| 71 || 71 || 32.3 || .418 || .331 || .793 || 3.8 || 5.9 || 1.7 || .3 || 12.1|- | style="text-align:left;"|| 71 || 2 || 14.1 || .429 || .412 || 1.000 || 1.9 || 2.0 || .4 || .1 || 6.2|- | style="text-align:left;"|| 69 || 69 || 29.1 || .467 || .336 || .842 || 7.7 || 3.4 || .7 || 1.3 || 10.2|- | style="text-align:left;"|| 66 || 66 || 33.6 || .473 || .358 || .758 || 6.1 || 3.5 || 1.1 || .3 || 23.6|- | style="text-align:left;"|| 61 || 61 || 29.6 || .736 || .000 || .722 || 9.6 || 2.0 || .9 || 2.2 || 10.0|- | style="text-align:left;"|| 52 || 3 || 11.0 || .396 || .270 || .808 || 1.7 || .4 || .4 || .1 || 3.8|- | style="text-align:left;"|^†| 49 || 25 || 29.2 || .440 || .349 || .848 || 3.3 || 4.2 || .8 || .1 || 14.4|- | style="text-align:left;"|^†| 44 || 5 || 16.5 || .429 || .349 || .588 || 2.4 || .4 || .5 || .4 || 4.7|- | style="text-align:left;"|^†| 44 || 0 || 24.7 || .443 || .397 || .859 || 2.8 || 1.5 || .8 || .5 || 9.7|- | style="text-align:left;"|| 35 || 1 || 11.7 || .526 || .400 || .857 || 4.6 || .2 || .1 || .4 || 3.7|- | style="text-align:left;"|^†| 26 || 4 || 27.4 || .409 || .306 || .853 || 3.4 || 3.5 || .6 || .6 || 11.0|- | style="text-align:left;"|| 26 || 0 || 6.1 || .460 || .432 || || 1.1 || .4 || .0 || .1 || 2.5|- | style="text-align:left;"|^†| 21 || 6 || 18.7 || .598 || .357 || .688 || 4.7 || 1.0 || .4 || .7 || 7.9|- | style="text-align:left;"|^†| 20 || 0 || 2.9 || .500 || 1.000 || .800 || .8 || .2 || .0 || .2 || 1.0|- | style="text-align:left;"|^†| 18 || 0 || 5.3 || .185 || .167 || .667 || 1.4 || .2 || .2 || .1 || 1.1|- | style="text-align:left;"|| 12 || 0 || 9.3 || .474 || .500 || 1.000 || 2.3 || .5 || .3 || .1 || 4.4|- | style="text-align:left;"|^†| 12 || 0 || 7.1 || .571 || .000 || .667 || 2.1 || .7 || .3 || .2 || 2.2|- | style="text-align:left;"|| 12 || 0 || 5.0 || .444 || .222 || .600 || .8 || .9 || .1 || .1 || 1.8|- | style="text-align:left;"|^†| 8 || 0 || 3.5 || .600 || .500 || || .9 || .6 || .0 || .0 || 1.9|- | style="text-align:left;"|^†| 6 || 0 || 2.5 || .333 || .333 || .500 || .0 || .2 || .0 || .0 || 1.2|- | style="text-align:left;"|^†| 3 || 0 || 2.0 || .000 || .000 || || .7 || .0 || .0 || .0 || .0|- | style="text-align:left;"|| 1 || 0 || 5.0 || .200 || .200 || || .0 || .0 || 1.0 || .0 || 3.0|- | style="text-align:left;"|^†| 1 || 0 || 4.0 || || || || .0 || .0 || .0 || .0 || .0|- | style="text-align:left;"|^†| 1 || 0 || 2.0 || .000 || || 1.000 || .0 || .0 || .0 || .0 || 2.0|- | style="text-align:left;"|| 1 || 0 || 2.0 || 1.000 || || || .0 || .0 || .0 || .0 || 2.0|- | style="text-align:left;"|| 1 || 0 || 2.0 || || || || .0 || .0 || .0 || .0 || .0|}

Playoffs

|- | style="text-align:left;"|| 24 || 24 || 41.0 || .426 || .393 || .800 || 6.7 || 6.2 || 1.2 || .9 || 25.6|- | style="text-align:left;"|| 24 || 24 || 38.3 || .470 || .373 || .763 || 6.9 || 3.5 || 1.1 || .4 || 23.1|- | style="text-align:left;"|| 24 || 5 || 27.3 || .433 || .393 || .808 || 3.8 || .8 || .3 || .8 || 8.6|- | style="text-align:left;"|| 24 || 0 || 12.9 || .422 || .333 || .667 || 1.9 || 1.6 || .3 || .1 || 4.8|- | style="text-align:left;"|| 23 || 23 || 35.4 || .523 || .480 || .778 || 9.3 || 3.3 || .8 || 1.3 || 12.0|- | style="text-align:left;"|| 23 || 3 || 25.4 || .364 || .313 || .824 || 3.0 || 2.7 || .9 || .6 || 8.5|- | style="text-align:left;"|| 21 || 21 || 36.2 || .405 || .350 || .806 || 4.5 || 5.9 || 1.2 || .2 || 15.4|- | style="text-align:left;"|| 17 || 15 || 23.2 || .679 || .000 || .893 || 6.2 || 1.0 || .7 || 2.2 || 7.7|- | style="text-align:left;"|| 16 || 5 || 12.5 || .588 || .214 || .750 || 3.3 || .7 || .3 || .5 || 4.3|- | style="text-align:left;"|| 15 || 0 || 3.5 || .235 || .091 || .750 || 1.0 || .2 || .1 || .3 || .8|- | style="text-align:left;"|| 13 || 0 || 1.8 || .250 || .300 || 1.000 || .3 || .3 || .0 || .0 || 1.0|- | style="text-align:left;"|| 9 || 0 || 2.1 || .750 || 1.000 || || .6 || .1 || .0 || .0 || .8|- | style="text-align:left;"|| 9 || 0 || 1.8 || .750 || 1.000 || || .2 || .0 || .0 || .0 || .9|- | style="text-align:left;"|| 9 || 0 || 1.7 || .000 || .000 || .500 || .3 || .0 || .0 || .0 || .1|- | style="text-align:left;"|| 7 || 0 || 2.1 || .250 || .333 || 1.000 || .1 || .3 || .0 || .0 || .7|}

Transactions

See main article: List of 2021–22 NBA season transactions.

Trades

June 18, 2021^[10]	To Boston Celtics Moses Brown Al Horford 2023 OKC second-round pick	To Oklahoma City Thunder Kemba Walker 2021 BOS first-round pick 2025 BOS second-round pick
July 31, 2021^[11]	To Boston Celtics Josh Richardson	To Dallas Mavericks Moses Brown
August 7, 2021^[12]	To Boston Celtics Kris Dunn (from Atlanta) Bruno Fernando (from Atlanta) 2023 POR second-round pick (from Atlanta)	To Sacramento Kings Tristan Thompson (from Boston)
To Atlanta Hawks Delon Wright (from Sacramento)
August 17, 2021^[13]	To Boston Celtics Cash considerations	To New York Knicks Evan Fournier (sign and trade) 2022 CHA second-round pick 2023 BOS second-round pick
September 15, 2021^[14]	To Boston Celtics Juancho Hernangómez	To Memphis Grizzlies Kris Dunn Carsen Edwards 2026 right to swap second-round picks
January 19, 2022^[15]	To Boston Celtics Bol Bol (from Denver) PJ Dozier (from Denver)	To San Antonio Spurs Juancho Hernangómez (from Boston) 2028 DEN second-round pick (from Denver) Cash considerations (from Boston) Cash considerations (from Denver)
To Denver Nuggets Bryn Forbes (from San Antonio)
February 10, 2022^[16]	To Boston Celtics Future second-round pick	To Orlando Magic Bol Bol PJ Dozier Future second-round pick Cash considerations
February 10, 2022^[17]	To Boston Celtics Derrick White	To San Antonio Spurs Romeo Langford Josh Richardson 2022 BOS first-round pick 2028 right to swap first-round picks
February 10, 2022^[18]	To Boston Celtics Daniel Theis	To Houston Rockets Bruno Fernando Enes Freedom Dennis Schröder

Free agency

Additions

Player	Signed	Former Team
Sam Hauser^[19]	August 13	Virginia
Enes Freedom^[20]		Portland Trail Blazers
Dennis Schröder^[21]		Los Angeles Lakers
Brodric Thomas^[22]	October 18	Cleveland Cavaliers

Subtractions

Player	Reason	New Team
Semi Ojeleye^[23]	Free agency	Milwaukee Bucks
Tacko Fall^[24]	Free agency	Cleveland Cavaliers
Tremont Waters^[25]	Free agency	Milwaukee Bucks

Notes and References

1. Web site: Danny Ainge Announces Retirement; Brad Stevens Promoted to President of Basketball Operations. NBA.com. June 2, 2021. July 16, 2021.
2. Web site: Celtics Name Ime Udoka 18th Head Coach in Franchise History. NBA.com. June 28, 2021. June 28, 2021.
3. Web site: Hartwell . Darren . March 24, 2022 . This stat puts Celtics' insane second-half turnaround in perspective . 2022-05-26 . NBC Sports Boston.
4. Web site: April 11, 2022 . An Appreciation For Celtics' Incredible Second-Half Turnaround . 2022-05-26 . CBS Boston.
5. Web site: Quinn . Justin . 2022-04-11 . Reacting to Celtics' remarkable turnaround since January: From 11-seed to 'best team in basketball' . 2022-05-26 . Celtics Wire .
6. Web site: NBA playoff updates: Bucks, Celtics clinch spots; Knicks officially eliminated . CBSSports.com . 6 April 2022 . en. Maloney, Jack. April 6, 2022.
7. Web site: Nets vs. Celtics score: Jayson Tatum leads Boston to series sweep of Brooklyn in 116-112 win in Game 4 . CBSSports.com . 26 April 2022. Quinn, Sam. April 26, 2022.
8. Web site: Celtics lose Game 6 and fall to the Warriors in the NBA Finals . www.boston.com . 17 June 2022.
9. Web site: 2021 NBA draft order: Complete picks for the first and second round. ESPN.com. June 22, 2021. July 16, 2021.
10. Web site: Celtics Acquire Five-Time All-Star Al Horford in Deal with Thunder. NBA.com. June 18, 2021. June 18, 2021.
11. Web site: Celtics Acquire Josh Richardson from Mavericks. NBA.com. July 31, 2021. July 31, 2021.
12. Web site: Sacramento Kings complete 3-team deal for Tristan Thompson. NBA.com. August 7, 2021. August 7, 2021.
13. Web site: Knicks Acquire Evan Fournier. NBA.com. August 17, 2021. August 17, 2021.
14. Web site: Celtics Acquire Juancho Hernangómez in Three-Player Trade with Grizzlies. NBA.com. October 14, 2021. September 15, 2021.
15. Web site: SPURS ACQUIRE JUANCHO HERNANGÓMEZ & SECOND ROUND PICK. NBA.com. January 29, 2022. January 19, 2022.
16. Web site: Magic add Bol Bol, PJ Dozier in deal with Celtics. NBA.com. February 10, 2022. February 10, 2022.
17. Web site: Celtics acquire Derrick White from Spurs in exchange for Josh Richardson and Romeo Langford. NBA.com. February 10, 2022. February 10, 2022.
18. Web site: Celtics bring back Daniel Theis, send Dennis Schroder to Rockets. NBA.com. February 10, 2022. February 10, 2022.
19. Web site: Celtics Sign Sam Hauser to Two-Way Contract. NBA.com. August 13, 2021. August 13, 2021.
20. Web site: Celtics Sign Enes Kanter. NBA.com. August 13, 2021. August 13, 2021.
21. Web site: Celtics Sign Dennis Schröder. NBA.com. August 13, 2021. August 13, 2021.
22. Web site: Celtics Sign Brodric Thomas to Two-Way Contract. NBA.com. November 16, 2021. October 18, 2021.
23. Web site: Milwaukee Bucks Sign Three Players. NBA.com. August 6, 2021. August 6, 2021.
24. Web site: Former Boston Celtics center Tacko Fall joins Cleveland Cavaliers on 1-year deal, agents say. ESPN. October 14, 2021. August 31, 2021. Young, Royce.
25. Web site: Bucks Sign Javin DeLaurier and Tremont Waters. NBA.com. October 14, 2021. September 27, 2021.