Mario Williams, Chris Hairston out sick for Bills

ORCHARD PARK, N.Y. -- Buffalo Bills defensive end Mario Williams and offensive tackle Chris Hairston missed practice Wednesday because of illnesses.

It's unclear when either player will return to practice.

Tight end Chris Gragg (knee) was the only other player not spotted at practice.

Safety Da'Norris Searcy (hamstring) was in uniform but did not take part in individual drills. Meanwhile, defensive end Jarius Wynn (knee) returned to practice and participated in individual drills.