PRINCETON -- The Princeton women's basketball team's bid for a sixth straight Ivy League regular-season title is on thin ice.
Riley Weiss scored 32 points and Columbia, buoyed by a big run to start the fourth quarter, swept the season series from the Tigers with a 64-60 victory on Saturday evening at Jadwin Gymnasium.
The Lions (20-5, 10-1) took over sole possession of first place with three games remaining, while Princeton (18-6, 9-2) dropped into a second-place tie with Harvard.
Kitty Henderson added 14 points for Columbia and hit what looked like a dagger 3-pointer from the corner for a five-point lead with 18 seconds left before a wild final sequence. Trailing by five, Fadima Tall connected on a 3-pointer as she was fouled with 3.6 seconds to go and a battle for a rebound after she intentionally missed the free throw led to a video review.
Officials determined the Lions rebounded the ball and called timeout before a jump ball was called and they were able to advance the ball with 1.9 seconds remaining and seal the game with two Weiss free throws.
Tall finished with 17 points and Ashley Chea scored 16 for Princeton, which was swept in the Ivy League for the first time since Penn got it twice during the 2016-17 season.
The defining sequence was the opening three minutes of the fourth quarter when Columbia put a 13-0 run on the Tigers to turn a six-point deficit into a seven-point lead. Weiss had 10 of the Lions' 13 points in the run.
That sequence included three Princeton turnovers that led to eight Columbia points. The Tigers coughed the ball up 24 times in the first meeting -- a 58-50 Lions victory in NYC -- and reduced that to 16 on Saturday in what was a point emphasis, yet some untimely giveaways swung the momentum.
Could the Ivy League get three bids to the NCAA Tournament?
According to ESPNW bracketologist Charlie Creme, Columbia and Harvard are both in the field of 68, with Princeton as the first team out. All three are ranked in the top 50 of the NET -- Harvard at 32, Columbia at 42 and Princeton at 50 -- and that could come into play should the three of them share the regular-season title and all other tiebreakers are equal.