Hampton sent a letter to the NCAA because it was upset with drawing a No. 16 seed.
The Cardinal and Golden Bears split their regular-season series, playing twice in the same week in January. Cal's win at Stanford ended the Cardinal's 81-game conference win streak.
Cal has beaten Stanford this season. If the Bears do it in the tournament, they will punch a ticket to the Final Four. They are among the five more teams that can make the Final Four.