Darren McFadden has been hurt in each of his five NFL seasons. That’s why backup running backs are so vital to the Raiders offense.

Rashad Jennings was brought in to fill that role and he certainly looks the part. The 6-foot-1 231-pound veteran has a powerful rushing style that fits a revamped Raiders blocking scheme based on gap creation and control.

Jennings has impressed in the early going and will get plenty of reps this preseason time he’ll use to carve out a larger role.

“Rashad’s a big back we want Rashad to play like a big back” Raiders coach Dennis Allen said. “Going into the preseason we’ll see if he can be that big physical presence that we expect him to be.”

Positive results might earn him the title of short-yardage back which will decrease punishment taken by McFadden over the course of the season. Jennings doesn't want to pigeonhole himself just yet.

Jennings hopes the running game is so effective that McFadden can’t take all the carries given out. That happened at times in recent seasons when the Raiders ran extremely well and Michael Bush emerged as a back complementary of McFadden’s skill set.