Kevin Kolb is excited to have C.J. Spiller in his backfield with the Buffalo Bills after having mid-level backs such as Beanie Wells and LaRod Stephen-Howling while with the Arizona Cardinals.

"Explosive," Kolb said on Wednesday. "Yeah, super-explosive. He's truly a bounce in every step, and there's very few of those around."

Kolb was asked if any teammates from his past compare to Spiller.

"The first thing that came to mind, but they're still different players, is Brian Westbrook," Kolb said, "because I played with him in Philly, and he was obviously a special player, Pro Bowler that last year I had him over there.

"C.J.'s plenty explosive, and he's got all those capabilities as well."