The field for the NBA Slam Dunk Contest scheduled for Feb. 13 in Toronto is set, according to league sources. The defending champion in Minnesota’s Zach Lavine, Detroit’s Andre Drummond, Denver’s Will Barton and Orlando’s Aaron Gordon are this year’s participants, league sources informed cleveland.com. League sources spoke on the condition of anonymity because the league is expected to announce the names of the high-flyers as soon as Thursday.