Forward Denis Chasse came up through the minor league hockey system in Montreal, playing for the Triple A Montreal Bourassa until the age of 16, where he averaged a point per game. In 1987-88, Chasse joined the St. Jean Lynx of the QMJHL for 13 games, picking up a single assist. The following year he split his time between the Verdun Junior Canadiens and the Drummondville Voltigeurs. His third year of Junior A was spent in Chicoutimi with the Sagueneens, where he collected 89 points in 67 games. Chasse remained undrafted by an NHL club and was asked to return to the QMJHL to play with Drummondville as an overage player. Chasse turned in a strong performance that year, scoring 47 goals and 101 points in 62 games while racking up 246 minutes in penalties. Chasse was a key contributor for the Voltigeurs in the playoffs in 1991, helping the team reach the Memorial Cup finals, where they were defeated by the champion Spokane Chiefs from the WHL. In four Memorial Cup games, Chasse scored three times.
In the fall of 1991, Chasse joined the Halifax Citadels of the AHL. He continued to play a rugged style of play, collecting 496 minutes in penalties over two seasons while also contributing 61 and 76 point seasons, respectively.
Chasse got his first taste of NHL action in 1993-94, when he played three games for the St. Louis Blues. It was a three-game tryout of sorts, and Chasse sufficiently impressed the Blues' brass to the point that he was used in 47 games the following season, where he had seven goals and 16 points. In 1995-96, Chasse played for three NHL teams; 42 games with the Blues, three with the Washington Capitals and 15 with the Winnipeg Jets after being traded for Stewart Malgunas on February 15, 1996.
In 1996-97, Chasse signed as a free agent with the Ottawa Senators. However, after playing just 22 games with the Sens, his rights were traded to the Chicago Blackhawks. Since 1997, Chasse has played professional hockey in Europe, two years in Germany with Mannheim and Augsburg and three years in the British League with Bracknell Bees and the Cardiff Devils.
In 1332 NHL games, Chasse scored eleven goals and 25 points.