Davidson came to town on Saturday and picked up the win against La Salle.
The Hawks erased a 41-28 Davidson halftime lead to come back and win on Saturday.
Frantz Massenat, with 25 points and seven rebounds, helped Drexel earn a 72-58 victory at Davidson on Sunday afternoon.
Oklahoma State had a terrific season, but got by far the toughest draw out of any five-seed in the bracket. Keep an eye on Oregon.
Chris Czerapowicz scored a career-high 23 points and Davidson beat Pennsylvania 75-70 Thursday night.