| Birth Date: | March 30, 1961 |
| Birth Place: | Stockholm, SWE |
| Height Ft: | 5 |
| Height In: | 11 |
| Weight Lb: | 187 |
| Position: | Defence |
| Shoots: | Left |
| Played For: | AIK IF Boston Bruins |
| Ntl Team: | SWE |
| Draft: | 140th overall |
| Draft Year: | 1981 |
| Draft Team: | Boston Bruins |
| Career Start: | 1980 |
| Career End: | 1994 |
Mats Gunnar "Mördaren" Thelin (born March 30, 1961, in Stockholm, Sweden) is a retired Swedish professional ice hockey defenceman who played 163 games in the National Hockey League for the Boston Bruins.
| Regular season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | G | A | Pts | PIM | GP | G | A | Pts | PIM | ||
| 1980–81 | AIK | SEL | 10 | 0 | 0 | 0 | 4 | 5 | 0 | 0 | 0 | 4 | ||
| 1981–82 | AIK | SEL | 36 | 2 | 2 | 4 | 28 | 7 | 0 | 1 | 1 | 16 | ||
| 1982–83 | AIK | SEL | 28 | 6 | 4 | 10 | 50 | 3 | 1 | 1 | 2 | 4 | ||
| 1983–84 | AIK | SEL | 16 | 4 | 1 | 5 | 20 | 1 | 0 | 0 | 0 | 2 | ||
| 1984–85 | Boston Bruins | NHL | 73 | 5 | 13 | 18 | 78 | 5 | 0 | 0 | 0 | 6 | ||
| 1985–86 | Boston Bruins | NHL | 31 | 2 | 3 | 5 | 29 | — | — | — | — | — | ||
| 1985–86 | Moncton Golden Flames | AHL | 2 | 0 | 1 | 1 | 0 | — | — | — | — | — | ||
| 1986–87 | Boston Bruins | NHL | 59 | 1 | 3 | 4 | 69 | — | — | — | — | — | ||
| 1987–88 | AIK | SEL | 39 | 2 | 8 | 10 | 56 | 1 | 0 | 0 | 0 | 0 | ||
| 1988–89 | AIK | SEL | 38 | 6 | 16 | 22 | 62 | 2 | 0 | 2 | 2 | 0 | ||
| 1989–90 | AIK | SEL | 15 | 3 | 4 | 7 | 20 | 2 | 0 | 0 | 0 | 2 | ||
| 1990–91 | AIK | SEL | 37 | 1 | 3 | 4 | 54 | — | — | — | — | — | ||
| 1991–92 | AIK | SEL | 36 | 0 | 5 | 5 | 79 | 3 | 0 | 0 | 0 | 2 | ||
| 1992–93 | AIK | SEL | 22 | 0 | 3 | 3 | 22 | — | — | — | — | — | ||
| 1992–93 | AIK | Allsv | 3 | 0 | 0 | 0 | 4 | — | — | — | — | — | ||
| 1993–94 | AIK | SWE II | 38 | 9 | 8 | 17 | 46 | 9 | 0 | 2 | 2 | 12 | ||
| SEL totals | 277 | 24 | 46 | 70 | 395 | 24 | 1 | 4 | 5 | 30 | ||||
| NHL totals | 163 | 8 | 19 | 27 | 176 | 5 | 0 | 0 | 0 | 6 | ||||
| Year | Team | Event | GP | G | A | Pts | PIM | |
|---|---|---|---|---|---|---|---|---|
| 1982 | Sweden | WC | 10 | 0 | 0 | 0 | 8 | |
| 1983 | Sweden | WC | 5 | 0 | 3 | 3 | 4 | |
| 1984 | Sweden | OG | 7 | 0 | 1 | 1 | 4 | |
| 1984 | Sweden | CC | 8 | 1 | 3 | 4 | 14 | |
| Senior totals | 30 | 1 | 7 | 8 | 30 | |||