A mid-foot sprain could force Oakland Raiders running back Darren McFadden to miss this weekend's game against the Denver Broncos.McFadden was held out of Wednesday's practice despite having the bye week to recover from the injury, which he suffered Oct. 23 against the Kansas City Chiefs.It isn't known when the 24-year-old will be able to return to practice, or whether he'll be healthy enough to suit up Sunday.McFadden has been one of the top running backs in the league so far, carrying the ball 113 times for 614 yards and four touchdowns.Michael Bush will get his first start of the season if McFadden can't go.
