Watch the unbelievable play that cost Boise State its undefeated season against Wyoming

Published Nov. 15, 2016 3:19 p.m. ET

Aaron Torres

Boise State has been the class of the Mountain West for years and it looked like they were on their way to another undefeated regular season -- until they ran into Wyoming Saturday night.

The Cowboys sent Laramie into a frenzy as they used a furious rally to beat the Broncos 30-28 and they did it in the most unusual way.

Watch as quarterback Brett Rypien drops back in the pocket late in a tie game, before he was sacked by Chase Appleby and the ball trickled out of the back of the end zone.

That one play cost Boise its undefeated season, and a likely trip to a New Year's Day Six bowl game, as the non-AQ representative.

As for Wyoming, it's clearly the biggest win since Craig Bohl took over in Laramie.