Buffalo Bills running back Karlos Williams is hospitalized, coach Rex Ryan announced Monday.
The rookie tailback "was in a lot of pain" when he woke up Monday, Ryan said.
The extent of the injury is currently unknown.
Williams led the Bills in carries with 14 during Friday night's 25-24 loss to the Carolina Panthers. He earned 40 yards on the ground with one touchdown and added two catches for 23 yards.
Fantasy Impact:
Williams has impressed the coaching staff during training camp enough to leap Bryce Brown on the depth chart. Williams is a tough, aggressive, physical runner and possesses good hands in the passing game. With Fred Jackson injured at times last year, the Bills RB3 job could end up having a fantasy impact at some point this season, so it's something to watch.