LeSean McCoy wasn't on the field for the start of the Buffalo Bills' mandatory minicamp Tuesday because of a stomach virus, coach Sean McDermott said.
Defensive tackle Kyle Williams was also out of action with "some neck stiffness," the coach said.
McDermott added that offensive tackle Cordy Glenn remains day-to-day with an ankle injury (he wore a working boot while watching practice from the sidelines) and wide receiver Sammy Watkins remains limited as he recovers from foot surgery.
Meanwhile, the Bills waived tight end Blake Annen Tuesday.
McDermott said the move was not related to the team's interest in free-agent tight end Gary Barnidge, who visited the team last month.