The Titans placed Winston (hamstring) on injured reserve Tuesday, Jim Wyatt of the team's official site reports.
Winston suffered a hamstring injury in the first quarter of last Sunday's loss to the 49ers and was unable to return to the contest. With the movement to IR, the slot cornerback's season is done, as the four-week minimum period will include the end of the regular season. Marcus Harris will likely finish out the season as the slot cornerback for the Titans' defense.