Bills rookie running back C.J. Spiller is out indefinitely after hurting his hamstring in a 14-12 win over the Detroit Lions on Sunday.
Though final tests results aren't in, coach Chan Gailey all but ruled out Spiller from playing next week, when the Bills travel to play Cincinnati.
"I can't imagine him playing this week," Gailey said. "We'll have to see how long it lasts."
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