In the fourth quarter Davis was running a vertical route and was forced to pull up as he grabbed the back of his leg. Richard Sherman made an interception on the play. Davis was quickly ruled out for the rest of the game and was spotted with an ice bag wrapped around his leg. The Niners did not reveal any details on the severity of the strain following the game. Davis’ backup is second-round rookie Vance McDonald.
Source: www.prosportsdaily.com