Robert Griffin III had to leave the Washington Redskins' 24-14 playoff loss to the Seattle Seahawks on Sunday when he injured his knee while trying to recover a bad snap.
The heralded rookie quarterback, who led Washington to the playoffs for the first time since 2007, already had his right knee braced because he strained a minor ligament during a game against the Baltimore Ravens on Dec. 9.
With more than six minutes remaining in Sunday's game, which featured the first NFL playoff matchup of rookie quarterbacks, the Redskins were set to run a play from the shotgun formation when a low snap glanced off Griffin's left hand and began to roll on the ground. As Griffin scrambled after the ball, his right knee buckled in an odd manner and he tumbled to the ground. The Seahawks eventually recovered the ball and kicked a field goal to provide the winning margin.
Griffin didn't get off the turf for several minutes, eventually leaving the field under his own power. He went to the locker room but returned to watch the end of the game. The extent of the injury is unknown. Griffin will undergo an MRI exam on Monday.
The 2011 Heisman Trophy winner set a rookie rushing record for quarterbacks with 815 yards this season. He helped the Redskins become only the fifth team to make the playoffs after a 3-6 start. Washington defeated the Dallas Cowboys in the regular-season finale to win the NFC East title with a 9-7 record.
Griffin completed 10 of 19 passes for 84 yards with two touchdowns and he ran for 21 yards in five carries. He had one pass intercepted.
Seattle rookie quarterback Russell Wilson was more impressive. He completed 15 of 26 passes for 187 yards and gained 67 yards in eight carries.