Columbia's Isaac Cohen made a 3-pointer that tied the game at 62 with 28 second left. After a trade of time-outs, Maodo Lo blocked Andre Walker's jumper but Laster ended up with the loose ball and beat the buzzer. After review, the basket stood.
Lo led Columbia (4-1) with 22 points and Kyle Castlin added 13 points. Columbia was just 7 of 24 from beyond the arc.
Loyola trailed by three with 7:42 left in the first half, but an 8-0 run propelled them to lead 35-32 at intermission.