Christian Ponder left the Minnesota Vikings' game in Week 13 against the Chicago Bears with a concussion.
Ponder was hurt when hit by Shea McClellin.
The Vikings put Matt Cassel into the game to replace Ponder.
Christian Ponder left the Minnesota Vikings' game in Week 13 against the Chicago Bears with a concussion.
Ponder was hurt when hit by Shea McClellin.
The Vikings put Matt Cassel into the game to replace Ponder.