sammy watkins

Buffalo Bills wide receiver Sammy Watkins (14) walks on the field before an NFL football game against the New York Jets Sunday, Oct. 26, 2014, in East Rutherford.

(Kathy Willens | The Associated Press)

Orchard Park, N.Y. — Despite playing every snap and receiving nine targets in the Buffalo Bills' Week 13 win over the Cleveland Browns, rookie wide receiver Sammy Watkins is dealing with a hip injury, coach Doug Marrone announced Monday.

Marrone said he wasn't sure if Watkins would miss time or if he would practice, but the injury may help explain why Watkins caught just three of his nine targets for only 11 yards.

"I have no idea," Marrone said. "I really don't. We practice Wednesday."

The Bills also announced that defensive tackle Marcell Dareus, who left the game on Sunday with what was announced as a groin injury, actually has a hip injury, the severity of which is unknown. He returned to the game following the injury.

Meanwhile, the Bills are continuing to evaluate tight end Chris Gragg and defensive end Jarius Wynn, who are both dealing with a knee injury. Running back C.J. Spiller, who was placed on injured reserve designated to return, is eligible to begin practicing this week but can't return to game action until Week 16. Marrone said the Bills would have an update later in the week on whether Spiller would be able to get back on the field.

Players had Monday off and return to practice on Wednesday to begin preparation for their Week 14 game against the Denver Broncos.