During his tenure as general manager of the Thrashers, the team recorded a 308–401–45–66 record and made their lone playoff appearance after winning the NHL's Southeast Division in 2006–07. Waddell also served as executive vice president and co-chair of the executive committee for the Thrashers' parent company, Atlanta Spirit.
During his tenure as general manager of the Thrashers, the team had a record of 308 wins, 401 losses, 45 ties, and 66 overtime games. They participated in their sole playoff appearance after winning the NHL's Southeast Division in 2006–07. Waddell also served as executive vice president and co-chair for the Thrashers' parent company, Atlanta Spirit.