January 1st, 2012 
Russ Loede 
Posted in Vikings running back Toby Gerhart suffered a sprained MCL in his left knee during the Vikings loss to the Bears, according to Tom Pelissero of 1500ESPN.
Gerhart rushed the ball 15 times for 67 yards on Sunday.
The Stanford alum finished the season with 464 yards on 4.9 yards per carry.
He also added three receiving touchdowns, to go along with 22 receptions.
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Actually, Toby Gerhart finished the season with 531yards, not 464 as stated in your article
At least it only a sprained MCL, the Vikings are going to need him Toby to be healthy and ready to go at the beginning of the 2012 season. They should not rush Peterson back, make sure that he is right both physically and mentality coming off and injury like that at his position.
Glad that it is only a sprain!!!! Could have been worse!!!! With AP most likely going to be out for a bit, Gerhart will be needed – rest up Toby. Really enjoy watching him pound the ball – he shows a surprising quickeness that the Bears were not ready for on a few plays.