COLUMBUS, Ohio (AP) -- Kwamain Mitchell looked pretty lucky when he banked in a 3-pointer to end the first half.
Turns out, he had plenty more in store.
Mitchell scored 22 points, including three big 3-pointers, and Saint Louis rode its gritty defense to a 61-54 victory over Memphis on Friday night in a West Regional second-round game.
Mitchell closed the first half by banking in a 3, then nailed two others to help the ninth-seeded Billikens (26-7) overturn an eight-point deficit in the second half. They advanced to play the winner of LIU Brooklyn and top-seeded Michigan State on Sunday.
Brian Conklin added 16 points, including five free throws in the final minute to salt the game away.
Will Barton had 16 points for the eighth-seeded Tigers (26-9), who had won 20 of their last 23 games.
The Billikens, making their seventh appearance in the NCAA tournament but first since 2000, have a team built around defense under coach Rick Majerus. They came in having held 10 opponents to 5...