C.J. Spiller was one of the NFL's most efficient running backs last season, averaging 6.0 yards per carry. Spiller finished the season with 1,244 yards on just 207 carries.

The Buffalo Bills are installing an uptempo, no-huddle offense under Doug Marrone and offensive coordinator Nathaniel Hackett.

"It's real simple: We're going to give him the ball until he throws up," Hackett told "The Howard Simon Show" on WGR 550 in Buffalo. "So he's either got to tap out or throw up on the field. Let's just put it that way."

Spiller has shared carries with Fred Jackson since becoming the ninth overall pick in 2010.

"Switching to this system and the tempo we've created, it's a completely different way that we call the game," Hackett said. "It's more of an attacking thing, and you get to put pressure on the defensive coordinator."