Michigan State QB Aidan Chiles out after hit vs. UCLA

Michigan State's Aidan Chiles warms up before the football game against UCLA on Saturday, Oct. 11, 2025, at Spartan Stadium in East Lansing.

Michigan State quarterback Aidan Chiles was knocked out of Saturday's home game in the third quarter against UCLA after absorbing a big hit on a running play.

Chiles was on the move in the third quarter when he was spun around by a UCLA defender before taking a hit from Bruins defensive lineman Keanu Williams. Chiles took a glancing blow off his helmet with just over 11 minutes remaining in the third quarter before absorbing much of the hit to his left shoulder.

Chiles was tended to by the Spartans' medical staff then spent time in the sideline medical tent while Alessio Milivojevic took over at QB with the Spartans trailing 24-7.

Chiles was 8-of-17 passing for 66 yards and had six carries for nine yards and a touchdown as Michigan State struggled to move the ball against UCLA, which entered 1-4.

--Field Level Media