CAMBRIDGE, Mass. -- Steven Cook scored 19 points, including the game-winner on a putback with 2.9 seconds left, and Princeton beat Harvard 57-56 on Saturday night for its eighth straight win.

Harvard, which has lost two of its last three, led 56-53 with 14.6 seconds left, but Princeton's Myles Stephens had a clear look at a 3-point attempt on the ensuing possession, yet instead drove for a layup and drew a foul from Justin Bassey. Stephens missed the free throw, but Cook grabbed the rebound and scored.

Bryce Aiken heaved the inbounds pass to Corey Johnson, but Johnson's 3-point shot from just outside the arc hit the back of the rim.

Cook is a point shy of 1,000 career points at Princeton (12-6, 5-0 Ivy League). Stephens added 15 points.

Siyani Chambers scored 17 points to lead Harvard (12-7, 4-2). Aiken, who finished with 10 points, made a 3-pointer to give the Crimson their first lead of the second half, 52-49.