Joe Staley suffered a sprained MCL, will undergo an MRI

According to Matt Barrows of the Sacramento Bee,  49ers offensive lineman Joe Staley suffered a sprained MCL during Sunday’s game against the Rams.

According to a source with knowledge of the injury, Staley suffered a sprained MCL in his right knee in the first quarter Sunday.

Staley will undergo an MRI to find out the severity of his injury.

Staley declined to talk about the injury after the game. He said he will have an MRI on the knee on Monday, which will tell the 49ers the severity and the length of time Staley is likely to miss.