Jon Stewart to co-host 'SportsCenter' for Warrior Games Posted Jul 7, 2017 Jon Stewart is set to co-host ESPN's SportsCenter alongside anchor Hannah Storm Friday for the conclusion of the Department of Defense's Warrior Games. A Paralympics-style event, the Warrior Games features seriously injured or ill service members and veterans from all branches of the military competing in events including swimming, archery, cycling and sitting volleyball. (United Press International)