Michigan quarterback Jack Tuttle announced his retirement on Monday.Tuttle is stepping away from football for medical reasons, as he “didn’t fully recover from” an offseason procedure to repair the ulnar collateral ligament in his throwing arm. He also recently sustained his fifth concussion.”Today, I am announcing my retirement from college football,” Tuttle posted to X, formerly known as Twitter. “This decision, though difficult, comes after deep reflection and heartfelt conversations with my family, doctors, and loved ones.”Tuttle saw action in four seasons at Indiana and two at Michigan. He appeared in two games for the Wolverines in 2024, completing 30 of 50 passes for 306 yards and one touchdown with two interceptions.Tuttle came off the bench to play at Washington on Oct. 5, then started in a 21-7 loss at Illinois on Oct. 19.