WASHINGTON, D.C. — Kamar Baldwin scored a career-high 31 points on 12-of-21 shooting, Kelan Martin hit the game-winner with 3 seconds left in the second overtime, and Butler rallied from 20 points down to beat Georgetown 91-89 on Wednesday night in their Big East Conference opener.

Martin scored 27 points on 10-of-20 shooting for Butler (11-3, 1-0), which trailed by 20 in the first half and 42-24 at halftime.

Baldwin’s jumper tied it at 85 and his layup put Butler up 87-85 in the second overtime. Marcus Derrickson’s free throw tied it 87 and the Hoyas led on two free throws by Jessie Govan. Martin tied it at 89 with a jumper and his one-handed floater in the lane was the game winner.

Sean McDermott grabbed a career-high eight rebounds for the Bulldogs, who outscored the Hoyas 50-34 in the paint and 12-4 on fast breaks. McDermott’s tip-in tied it at 75 with 1 second left in regulation and his free throw tied it at 83 at the end of OT.

Butler’s Tyler Wideman scored 15 points with eight boards.

Derrickson scored 23 points with 11 rebounds for Georgetown (10-2, 0-1), Govan added 19 with 13 boards and Jahvon Blair scored 17, including 11 of 12 free throws.