Mario Gosselin was a Canadian ice hockey goaltender who played professionally in the National Hockey League (NHL) and the American Hockey League (AHL) during the 1980s and early 1990s. He was born on December 15, 1963, in Thetford Mines, Quebec, Canada.

Gosselin began his professional career in the AHL with the Fredericton Express in the 1983-84 season. He played in 34 games and recorded a 3.68 goals against average (GAA) and a .886 save percentage. The following season, he split time between Fredericton and the Quebec Nordiques of the NHL. He played in 11 games for Quebec and recorded a 3.92 GAA and a .871 save percentage.

Gosselin became the Nordiques' starting goaltender in the 1985-86 season. He played in 52 games and recorded a 3.62 GAA and a .886 save percentage. He helped lead the Nordiques to the playoffs, where they were eliminated in the first round by the Montreal Canadiens. Gosselin played in all three playoff games and recorded a 3.00 GAA and a .907 save percentage.

In the 1986-87 season, Gosselin played in 47 games for the Nordiques and recorded a 3.77 GAA and a .874 save percentage. He helped lead the team to the playoffs again, but they were eliminated in the first round by the Hartford Whalers. Gosselin played in all six playoff games and recorded a 4.17 GAA and a .862 save percentage.

Gosselin's best season in the NHL came in the 1987-88 season. He played in 50 games for the Nordiques and recorded a 3.23 GAA and a .895 save percentage. He helped lead the team to the playoffs for the third consecutive season, but they were eliminated in the first round by the Boston Bruins. Gosselin played in all five playoff games and recorded a 3.60 GAA and a .880 save percentage.

Gosselin's playing time decreased in the following seasons, as he split time with other goaltenders. He played in 28 games in the 1988-89 season, 20 games in the 1989-90 season, and 16 games in the 1990-91 season. He was traded to the Edmonton Oilers in the middle of the 1991-92 season and played in 10 games for them, recording a 3.85 GAA and a .870 save percentage.

Gosselin's last season in the NHL was the 1992-93 season, where he played in 12 games for the Ottawa Senators and recorded a 4.23 GAA and a .862 save percentage. He played his last professional season in the AHL with the Binghamton Rangers in the 1993-94 season.

In his NHL career, Gosselin played in 244 games and recorded a 3.67 GAA and a .881 save percentage. He played in 14 playoff games and recorded a 3.77 GAA and a .874 save percentage.

After his playing career, Gosselin became a goaltending coach. He worked with the Quebec Remparts of the Quebec Major Junior Hockey League (QMJHL) from 2005 to

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