Tchewa registered his fifth career double-double and second in the last three games.
It was a back-and-forth affair all night between the Bulls and Owls with 11 lead changes, 15 ties, and neither side leading by more than two possessions.
Temple took the lead for good with a pair of free throws with 2:35 left to play and was able to hold off the USF offense and seal the game at the charity stripe.