The Spartans have defeated Michigan, Iowa and Illinois in February as they look to extend a 22-year tournament streak.
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.
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.
Griffin agreed to a contract buyout with the Pistons on Friday.
Joan Laporta oversaw Barcelona from 2003-10 and steps back into the role at a pivotal point in the club's history.