ORCHARD PARK- Buffalo Bills running back LeSean McCoy (hamstring) will miss Sunday's game in Miami, according to ESPN's Josina Anderson.

Anderson reports McCoy could also miss time beyond this week.

McCoy was forced to leave practice Wednesday with tightness in his hamstring. He did not practice on Thursday.

Head coach Rex Ryan has not announced if McCoy will play or not.

If McCoy does not go, back-up running back Mike Gillislee assumes the starting role in a favorable Week 7 matchup.

The Dolphins allow the second most rushing yards per game in the NFL.

The Bills (4-2) visit the Dolphins on Sunday at 1 p.m.