Roberson left Saturday's game against Massachusetts in an ambulance after suffering a severe leg injury, ESPN reports.
Roberson's season is very much in doubt. It's a crushing injury for Indiana, because Roberson looked quite good to this point in his second season. He finished the game 6-of-11 for 98 yards, one touchdown and one interception while running for 105 yards and two touchdowns. Cameron Coffman replaced him.
