Wagner (7-3) took a 14-3 lead when Dominique Williams rushed 5-yards for the score. Williams finished with 173 yards on 22 carries.
Eddie Houghton answered for Holy Cross (1-9), running it in from 3 yards out with 36 seconds left in the first half. Wagner led at halftime 14-10.
With Wagner trailing 30-17 in the fourth quarter, Doscher took over. Doscher found Williams for a 10-yard touchdown with 7:09 remaining, cutting the lead to 30-24.
On Holy Cross' next possession, Jarrett Dieudonne forced Steven Elder to fumble, setting up the winning drive.
Doscher completed the comeback finding Morgan for the 4-yard touchdown and the win.
Jordan Canzeri broke long touchdown runs on back-to-back series in the third quarter, and No. 3 Iowa completed its first perfect regular season in 93 years with a 28-20 victory over Nebraska on F
Adam Mitcheson 23 yd FG GOOD
LINCOLN, Neb. -- On to Indianapolis and the Big Ten championship game, Iowa is 60 minutes from the College Football Playoff. The fourth-ranked Hawkeyes rumbled past Nebraska 28-20 on Friday at Memorial Stadium to complete a 12-0 regular season, using a pair of third-quarter touchdown runs by Jordan Canzeri to create separation in ice-cold conditions.
Iowa coach Kirk Ferentz describes his team's 28-20 victory over Nebraska and says he is pleased with his team's undefeated record, the first 12-win season in Iowa history.
Iowa celebrates undefeated regular season
Myles Gaskin rushed for 138 yards and two touchdowns, Sidney Jones, Darren Gardenhire and Azeem Victor all returned turnovers for touchdowns in the second half and Washington became bowl eligible
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