ITHACA, N.Y. -- Siyani Chambers scored 18 points with a career-high 11 assists, the freshman's second straight double-double, and Harvard held on to defeat Cornell 67-65 Friday night to remain unbeaten in the Ivy League.

The Crimson (13-6, 5-0) twice led by 21 points early in the second half, but Cornell (10-12, 2-3) rallied by shooting 62.5 percent (15 of 24) in the final 20 minutes.

Harvard led 67-52 with 4:21 left after a pair of 3-pointers by Christian Webster, but a 13-0 run pulled Cornell to within 67-65 with 42 seconds left.

A missed free throw by Chambers gave Cornell the ball with 11 seconds to play, but Errick Peck was unable to hit a potential game-winner.

Webster made 5 of 11 3-pointers and finished with 17 points for the Crimson, and Wesley Saunders added 14 points.

Peck had 17 points Cornell. Shonn Miller added 13 points and Johnathan Gray 12.