Yale (13-17, 7-6) used a 17-5 run over the final 9 minutes of the first half to take a 36-24 lead into intermission. Princeton roared back to within one, 62-61, on Ian Hummer's jumper with 3:08 remaining, but scored just five points the rest of the way.
Princeton (16-10, 9-3), which sits half a game behind Harvard for first place after the Crimson's win over Columbia, shot 52 percent (23 of 44). Yale answered with its second-best shooting performance of the season, 61 percent (23 of 38), and made 16 of 20 free throws.
T.J. Bray paced Princeton with 17 points.
Devin Williams' decision last month to sign with an agent and enter the NBA draft has left West Virginia in a tough spot.
Florida State's student government has passed a resolution discouraging Seminoles fans from wearing Native American headdresses at games.
The second annual Gavitt Tipoff Games, eight games between members of the Big East and Big Ten to be played Nov. 14-18, will feature Villanova at Purdue in the opener.