PHILADELPHIA, Pa.—It took 50 minutes and two overtimes, but the Harvard men’s basketball team emerged from the Palestra on Saturday night with a victory.

After squandering an 18-point second-half lead, the Crimson (16-4, 5-1 Ivy) battled back from a deficit in the second overtime period to pull out a gutsy 83-82 win against Penn (9-9, 3-1).

Junior co-captain Oliver McNally delivered the victory, sinking a baseline floater to give Harvard the one-point advantage with 11 seconds on the clock.

“I just saw a smaller guy on me,” McNally said. “I tried to take it strong and tried to get to the rim.”

On their final possession, the Quakers put the ball in the hands of their top scorer, junior Zack Rosen. But Rosen’s last-second attempt was swatted away by sophomore Kyle Casey, securing the Harvard victory.

“Anytime you can come and win a basketball game like this against an outstanding team, in a tremendous environment on our second night on the road, it’s a tremendous victory for us,” Crimson coach Tommy Amaker said.

While Rosen’s final attempt was off its mark, the Ivy League’s reigning scoring champion had more success at the conclusion of the first extra period, sinking a floater at the buzzer to even the score and extend the contest.

Penn rode the momentum into the second overtime, grabbing its first lead 46 minutes into the game off a baseline layup from Jack Eggleston. The senior scored 23 points on the night.

Moments later, Quaker Conor Turley got to the line, hitting one of two attempts.

Sophomore Christian Webster cut into the Quakers’ lead, sinking a pair of free throws, but Penn built its lead back up to three, 82-79, thanks to a backdoor layup from Eggleston.

Two minutes away from suffering its second conference loss in as many days, the Crimson received a clutch play from Casey. The forward received the ball under the basket and powered to the hoop, picking up a foul. Casey drilled both attempts to pull Harvard within one.

The Quakers managed to beat the Crimson’s press, but sophomore Brandyn Curry forced a jump ball on the other end to return possession to Harvard.

With less than a minute on the clock, Webster was fouled driving to the basket and went to the line with a chance to regain the lead for Harvard. But Webster—an 88.5-percent shooter from the stripe—missed both attempts.

The Quakers pulled down the rebound and let the clock run down to under 25 seconds. With 21 on the clock, Penn swung the ball to Eggleston in the corner. But Eggleston missed the deep jumper, and Curry pulled down the long rebound. With the shot clock off, Curry pushed the ball up the court and found McNally in the corner.

McNally gave an upfake and then dribbled to the cup, finishing with a floater that sailed through the net. The floater—just McNally’s second basket on the night—proved to be the game-winner.