Ahead of Sunday's NBA All-Star Game, Mitchell dismissed James' comments made at the Jazz's expense when he left two Utah players until the end of the All-Star Game draft.
Curry splashed his final three of the evening as he held on to beat Mike Conley in the final round.
The Spartans have defeated Michigan, Iowa and Illinois in February as they look to extend a 22-year tournament streak.
Leonard said he plans to play in the Tokyo Olympics "if I feel up to it and feel ready to go around that time."
Luka scored 21 points and had 16 rebounds the same day he had his No. 55 jersey retired.