By UCLA has already weathered one major quarterback injury. It can only hope it’s not facing another.
Ty Dieffenbach, a bright spot for the No. 4-ranked Bruins since starter Nico Iamaleava’s knee injury, exited Friday’s game against Illinois with an apparent injury. Third-string quarterback Madden Iamaleava, Nico’s brother, replaced him under center with UCLA up 10-0.
The injury occurred less than a minute before halftime, when Dieffenbach took a hard hit from Illinois defensive lineman Carter Janki on an incomplete pass. Dieffenbach was writhing on the ground while holding his left shoulder, then had to be helped off the field and into the blue tent.
He moved to the locker room at halftime, with a clear limp. There was no sign of him at the start of the third quarter, with Iamaleava continuing to lead the UCLA offense.
Ty Dieffenbach walks out of the injury tent under his own power. He’s walking gingerly and not moving his left arm. pic.twitter.com/ObR23RuNZM
— Connor Morrissette (@C_Morrissette) November 14, 2026
Dieffenbach transferred to UCLA from Cal Poly last offseason and sat second on the QB depth chart until the elder Iamaleava went down in Week 6 against Oregon. Since then, the Bruins offense has barely missed a beat with Dieffenbach reeling off four straight wins in his first four starts before this week.
With a 9-0 record entering Friday, UCLA is in the thick of the College Football Playoff race and is one of two remaining undefeated teams in the FBS, alongside No. 2 Utah. The committee has considered quarterback injuries in the past, potentially adding even more drama for a team whose ranking has been a matter of some controversy.
A three-star recruit out of Agoura Hills, California, Dieffenbach began his college career at Pittsburgh but didn’t see any game action in his first two seasons. He started 12 games for Cal Poly last year, posting 1,305 passing yards, a 56.8% completition rate, 9 touchdowns and 9 interceptions.
