For a while, it looked like another unbeaten would fall on Saturday.
But Jason Calliste and the No. 13 Oregon Ducks wouldn't hear of it, erasing a near game-long deficit to win in overtime, 99-95.
Oregon kept the game close for most of the night, never trailing by more than eight, but it was a late jumper from Mike Moser that finally tied the game at 84-84 with 1:29 to play, setting up five extra minutes of basketball.
In the extra session, Dameyan Dotson put the Ducks ahead for good with a layup with 35 seconds left, then Moser hit the clinching free throws to make it a two-possession game with just 10.2 seconds left.
Calliste led Oregon with a career-high 31 points. That came on 13-of-13 shooting from the foul line and 4-of-7 shooting from three. Joseph Young added 25 of his own.
Tyler Haws again led BYU in scoring. He had 32 points on 13-of-21 shooting from the field.
With the win, Oregon improves to 11-0 and is one of just 10 unbeaten teams remaining.