BOSTON (AP) -- John Baumann had 20 points, 12 rebounds and three steals as Columbia came back from a nine point, second-half deficit to hand Harvard its seventh straight loss 73-64 on Saturday night.
Baumann scored 12 points as Columbia outscored Harvard 25-17 over the last 11:08. Ben Nwachukwu had eight points in the last eight minutes and finished with 16 points and three blocks. Mack Montgomery had 13 points on 4-of-4 shooting for Columbia, which won its fourth straight.
Columbia (12-11, 5-3 Ivy League) had nine offensive rebounds in the second half, outrebounding the Crimson 24-16 in the half and 36-32 overall.
Harvard shot 43 percent from the floor and 33 percent from 3-point range in the first half to take a 34-29 halftime lead. But the Crimson (6-18, 1-7) made just 30 percent from the field and 2-of-11 from beyond the arc in the second half.
The Crimson made just one shot over a 10-minute span in the first half before scoring 10 points in the last 3:43, capped by Housman's 3-pointer at the buzzer.