High Quality Content by WIKIPEDIA articles! The 2009–10 Atlanta Thrashers season was the 11th season of play for the National Hockey League (NHL) franchise. The Thrashers failed to make the playoffs this season and at the end of the regular season, announced that they will not retain John Anderson as head coach, the Thrashers also promoted Don Waddell to President and Rick Dudley to General Manager. Assistant coaches Randy Cunneyworth, Todd Nelson and Steve Weeks were also not retained.