ESPN Men's Basketball

NEW YORK (AP) -- Ben Nwachukwu's tip-in with 2 seconds left gave Columbia a 59-57 victory over Penn on Friday night, sending the Quakers to their first loss in the Ivy League.

Mack Montgomery missed a jump shot from the right side but Nwachukwu tipped it in as several players went for the rebound.

Penn (15-7, 7-1) had trailed only once in the second half of a league game this season -- the first 45 seconds after intermission against Yale on Feb. 4. The Quakers had won their first seven league games by an average of 23.1 points.

Steve Danley gave the Quakers a 57-54 lead on a layup with 1:45 to play but John Baumann hit two free throws and Nwachukwu made a foul shot to tie it with 53 seconds left.

Columbia (9-13, 2-7) snapped a five-game losing streak.

Ibrahim Jaaber led Penn with 24 points.

Justin Armstrong led the Lions with 21 points while Montgomery and Nwachukwu had 10 each.

Penn put together a 14-2 run to take a 24-18 lead with 6:21 left in the first half. Jaaber started the run with a 3-pointer.

The Quakers made seven of 15 3-pointers in the first half and led 33-28 at the break.

Penn had won nine of its previous ten games overall and eight straight against Columbia.