UCLA quarterback Nico Iamaleava is expected to miss the rest of the season with a knee injury, sources told CBS Sports’ Matt Zenitz. Iamaleava exited Saturday’s 17-15 win over Oregon after getting awkwardly tangled between a pair of Ducks defenders. Iamaleava, a former five-star recruit, transferred from Tennessee to UCLA before the 2025 season, staying with the Bruins after Bob Chesney took over. In his second season with the Bruins, Iamaleava provided some stability at the quarterback position, even if his numbers didn’t jump off the page. In four-plus games, Iamaleava completed 62.1 percent of his passes for 982 yards, four touchdowns and four interceptions while rushing for 144 yards and a score. Heading into the offseason, Iamaleava will have a big decision to make regarding the 2027 NFL Draft. Iamaleava has the tools to be a first-round pick, but he may have to spend one more season at the college level to prove his health and improve his draft value. When Iamaleava left the game against Oregon, backup Ty Dieffenbach came in and ran the offense well enough to get the win. The senior completed three of his six pass attempts for 43 yards and a touchdown. 12 UCLA’s first test without Iamaleava will be a home game against 4-1 Wisconsin on Saturday night. Where do the Bruins go at QB? While Dieffenbach replaced Iamaleava against Oregon, that doesn’t mean the starting role is his for the rest of the season. In his postgame press conference, Chesney admitted it will be a “week-to-week” situation and that Dieffenbach’s mobility earned him the nod as the lead running back against Oregon. “We really work week to week,” Chesney told 247Sports. “This week, we felt like we had to run the quarterback a little bit more, possibly. And that’s where I thought Ty had a really good week. And that put us in that spot. It’s just one of those things. I’m sure if Madden had gone in there, he would have done a phenomenal job as well. But Ty was the guy we decided on based on the previous week of practice, and I thought he did a really good job. But Madden will also be there throughout the process. competing and fighting for that position with or without Nico.” Although he performed admirably, Dieffenbach’s appearance against Oregon was his FBS debut. Dieffenbach, a three-star recruit out of high school, spent two years at Pitt before transferring to Cal Poly last season. He was a starter for the Mustangs last year before transferring to UCLA in the offseason. In his lone season at Cal Poly, Dieffenbach completed just 56.8 percent of his passes for 1,305 yards, nine touchdowns and nine interceptions. Dieffenbach’s resume (or lack thereof) likely leaves the door open for sophomore Madden Iamaleava, Nico’s younger brother. Madden, a four-star recruit in the 2025 signing class, spent a few months at Arkansas before joining his brother at UCLA. Madden Iamaleava has even little experience, limited to one pass attempt in his career. It was left incomplete. This may be a scenario where Chesney simply passes the hot hand from week to week, but the good news is that the quarterback probably won’t be asked to do much. How much does the QB matter? The quarterback definitely matters, as the Bruins can’t play against someone who derails the entire offense. But can Chesney find a game manager between Dieffenbach and Madden Iamaleava? That may be all you need. If Chesney can put together average quarterback play the rest of the way, then UCLA’s College Football Playoff hopes are still alive because of how good the team is at running the ball and playing defense. The Bruins rank sixth in the country in rushing yards per game with 253.2, and Wayne Knight is becoming a national superstar at running back. That should allow UCLA to take some of the burden off its quarterback, whoever that may be. It also helps that the Bruins don’t need to light up the scoreboard because of how the defense is playing. The Bruins are eighth in the Big Ten in scoring defense, allowing just 18.0 points per game, and are especially good against the run, allowing just 87.6 rushing yards per game. That means the quarterback doesn’t have to air the ball to win. In fact, Nico Iamaleava did not attract much attention with his game before the injury. Older brother Iamaleava fumbled three times against Oregon, and UCLA still managed to pull out a win at Autzen Stadium.
