"Having that kind of game-breaker out of the backfield certainly will get your attention," coach Rex Ryan said. "The kid at Buffalo, (C.J.) Spiller, is one of those guys that has that kind of speed. Chris, obviously, your antenna is up every time he comes out of that backfield. If he motions out, the DBs know, like wait a second, here's a 4.2. You'll approach him differently than you would most halfbacks."