ATLANTA — Al Horford scored 22 points, including a go-ahead dunk with 21 seconds remaining, and the Atlanta Hawks beat the short-handed Toronto Raptors 93-92 on Wednesday night. Longtime Raptors guard Jose Calderon and forward Ed Davis gave farewell hugs to their teammates about an hour before the game as word leaked of a trade that will send small forward Rudy Gay from Memphis to Toronto. DeMar DeRozan led Toronto with 23 points.