The Idaho Vandals defeated the Wyoming Cowboys for the first time in 103 years Saturday with a 17-13 victory in Laramie, Wyo.It was the first time the Vandals have ever won in Laramie and it was Idaho coach Jason Eck's second victory against a Football Bowl Subdivision school in two years.But the win came at a cost as quarterback Jack Wagner went down with an upper body injury with about seven minutes to go and was unable to return. Redshirt freshman Nick Josifek replaced Wagner, but did not throw a pass.Wagner started the game after original starting quarterback Jack Layne broke his collarbone in the first game of the season against Oregon.Idaho senior defensive end Keyshawn James-Newby dominated on the defensive line and recorded three sacks.Wyoming struck first with a field goal on the first drive of the game. Idaho went three-and-out, but a bad snap went over the head of Wyoming quarterback Evan Svoboda and Idaho linebacker Isiah King picked it up for a turnover.Junior running back Elisha Cummings had five carries on the ensuing drive, including a 3-yard touchdown on a fourth-down play to give the Vandals the lead, 7-3 after the extra point. Cummings finished with 16 carries for 52 yards and the touchdown.Wagner looked solid early and was a perfect 5-for-5 in the first quarter for 51 yards. Every pass was to sophomore wide receiver Jordan Dwyer.