Montgomery (abdomen) was placed on injured reserve by the Colts on Sunday, JJ Stankevitz of the team's official website reports.
Montgomery signed with the team in early August, ultimately reeling in two of three targets for 21 yards during the preseason. The wide receiver appears to have picked up an abdominal injury at some point during the preseason, and he is now set to miss the entire 2026 campaign while on IR, unless he reaches an injury settlement with Indianapolis.