See main article: 2011 Major League Soccer season.
| MLS Cup Playoffs | |
| Year: | 2011 |
| Country: | United States Canada |
| Num Teams: | 10 |
| Champions: | Los Angeles Galaxy (3rd title) |
| Runner-Up: | Houston Dynamo |
| Semi-Finalist1: | Sporting Kansas City |
| Semi-Finalist2: | Real Salt Lake |
| Matches: | 13 |
| Goals: | 27 |
| Attendance: | 258582 |
| Top Goal Scorer: | Álvaro Saborío |
| Prevseason: | 2010 |
| Nextseason: | 2012 |
The 2011 MLS Cup Playoffs was the sixteenth post-season tournament culminating the Major League Soccer regular season. The tournament began on October 26 with the play-in round and concluded on November 20 with the championship match. It was the first playoff series to include ten clubs, two more than the traditional eight. Six of the ten teams earned a direct bye into the conference semifinals, while the four wildcard teams played a single-elimination match to earn a berth into the conference semis. These eight clubs played in a single-elimination tournament en route to playoffs championship MLS Cup 2011, which doubles as the league championship for the 2011 MLS season altogether.
The defending MLS Cup champions were the Colorado Rapids, who beat FC Dallas 2–1 in the 2010 championship.
As the preliminary round was eliminated from the CONCACAF Champions League, both finalists directly entered 2012–13 CONCACAF Champions League Group Stage, along with the Supporters' Shield winner for the regular season and the 2011 U.S. Open Cup champion. However, none of these berths were available to the league's two Canadian teams, which instead participated in the Canadian Championship for that country's single berth in the CONCACAF Champions League.
See main article: MLS Cup Playoffs.
The format for the tournament was announced on February 23, 2011. The top three clubs in each of the league's two conferences will earn the six automatic spots in the quarterfinals. The wild-card entrants, seeded seventh through tenth, will enter based upon their overall position in a single table of the league standings. The new format is assembled so that the weakest seed to qualify out of the wild-card rounds will have to play the Supporters' Shield winner.[1] The other entrant will play the conference champion that did not win the Shield.
The playoffs will begin with the Play-in round, which will contain the wildcard seeds. The first and second-placed wildcard seeds (seventh and eight place, respectively) will host the third and fourth-placed wildcard seeds (ninth and tenth place, respectively). The winners of each play-in proper will earn a berth into the conference semifinals, or the quarterfinals, of the playoffs.
Following the play-in round, will be the conference semifinals, where the two play-in round winners will join the six clubs that earned a direct bye into this round. The conference semifinals, will be a two-legged, aggregate series, in which each team plays their opponent twice: once at home, and once away. The team with the most goals accumulated over the two-match series will win the series and qualify for the conference championship. In this round, the lowest seeded wildcard team to advance will play against the MLS Supporters' Shield winner (regular season champion). The other wildcard seed will play against either the Eastern or Western Conference regular season champion, depending on which conference champion wins the Supporters' Shield. Also in the conference semifinals, feature the conference runners-up and third-place finishes from both the Eastern and Western Conference.
The semifinal round, or the conference championship, will feature the winners from the conference semifinals. This round will be a one-legged affair, in which the higher seeded club will host the lower seed. The winner of these matches earn two berths (one from each conference) into the 2011 MLS Cup championship and a guaranteed berth in the 2012–13 CONCACAF Champions League.
The Eastern Conference and Western Conference bracket winners will meet in the MLS Cup final, which will be held at the pre-determined neutral venue. This year, the final will be held at the Home Depot Center in Carson, California, home of the Los Angeles Galaxy and Chivas USA. The MLS Cup winner will be crowned league champion for the 2011 MLS season.
The top three clubs from each conference, based on final point totals, will qualify for the playoffs. From among the remaining clubs, the top 4 qualify as wild cards, entering the play-in round to narrow the field to 8. The Los Angeles Galaxy were the first MLS club to qualify for the playoffs, qualifying with a 1–0 win over Colorado Rapids on September 9.[2]
If more than two clubs are tied, once a club advances through any step, the process reverts to Tiebreaker 1 among the remaining tied clubs recursively until all ties are resolved.[3]
Note: The LA Galaxy, as MLS Supporters Shield winners, were assured of playing the lower seeded Wild Card series winner (New York Red Bulls) in the Conference Semifinals, while Sporting Kansas City would play the higher seeded Wild Card series winner (Colorado Rapids).
Major League Soccer released the schedule for its playoffs on August 9, 2011.[4]
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Sporting advances 4–0 on aggregate.----
Houston advances 3–1 on aggregate.
Los Angeles advances 3–1 on aggregate.----
Real Salt Lake advances 3–2 on aggregate.
Host will depend on the higher seeded team. Single elimination match.[4]
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See main article: MLS Cup 2011.
Note: Statistics only for post-season games.[5]
| Rank | Scorer | Club | Goals |
|---|---|---|---|
| 1 |  Landon Donovan | Los Angeles Galaxy | 3 |
| Mike Magee | Los Angeles Galaxy | 3 | |
| Álvaro Saborío | Real Salt Lake | 3 | |
| 4 | Teal Bunbury | Sporting Kansas City | 2 |
 André Hainault | Houston Dynamo | 2 | |
| 6 |  Osvaldo Alonso | Seattle Sounders FC | 1 |
| Calen Carr | Houston Dynamo | 1 | |
 Aurélien Collin | Sporting Kansas City | 1 | |
| Carlos Costly | Houston Dynamo | 1 | |
 Omar Cummings | Colorado Rapids | 1 | |
| Ned Grabavoy | Real Salt Lake | 1 | |
| Thierry Henry | New York Red Bulls | 1 | |
| Robbie Keane | Los Angeles Galaxy | 1 | |
| Sébastien Le Toux | Philadelphia Union | 1 | |
 Joel Lindpere | New York Red Bulls | 1 | |
| Lamar Neagle | Seattle Sounders FC | 1 | |
| Luke Rodgers | New York Red Bulls | 1 | |
| C. J. Sapong | Sporting Kansas City | 1 | |
| Rank | Player | Club | Assists |
|---|---|---|---|
| 1 | David Beckham | Los Angeles Galaxy | 3 |
| 2 | Graham Zusi | Sporting Kansas City | 2 |
| 3 |  Mehdi Ballouchy | New York Red Bulls | 1 |
 Luiz Camargo | Houston Dynamo | 1 | |
| Júlio César | Sporting Kansas City | 1 | |
| Brian Ching | Houston Dynamo | 1 | |
| Brad Davis | Houston Dynamo | 1 | |
| Landon Donovan | Los Angeles Galaxy | 1 | |
| Michael Farfan | Philadelphia Union | 1 | |
| Thierry Henry | New York Red Bulls | 1 | |
 Robbie Keane | Los Angeles Galaxy | 1 | |
 Kosuke Kimura | Colorado Rapids | 1 | |
 Fredy Montero | Seattle Sounders FC | 1 | |
 Javier Morales | Real Salt Lake | 1 | |
| Jamison Olave | Real Salt Lake | 1 | |
| Chris Wingert | Real Salt Lake | 1 |