The injury occurred last in the first half of last Sunday's game against the Philadelphia Eagles and McFadden did not return. Hamstring issues are nothing new for McFadden, he had to leave a game earlier this year for the same reason.
Rashad Jennings, meanwhile, looked rejuvenated in the loss. He totaled 102 rushing yards and 74 receiving yards on seven receptions against Philadelphia.
The Raiders head into this week with a good matchup on the road. The Giants have given up the 28th-most points per game on the season and have been inconsistent on both ends. If the Raiders can keep Terrelle Pryor off his back, they should be able to move the ball.
Fantasy impact: If you're really in a bind, McFadden isn't exactly a must-own player. As for Jennings, he's a nice flex this week with a high upside.