One Buffalo Bills' free agent addition has been standing out during training camp and was named a fantasy football sleeper.

After Joey Bosa missed almost all of the spring with a sore calf, offensive lineman Sedrick Van Pran-Granger has been sidelined at the start of camp with a calf injury, and now linebacker Dorian Williams is down with that same ailment.

On Wednesday, the Buffalo Bills had their first day of work as they began a two-and-a-half-week stay in Rochester.

"First real skirmish of camp involves Alec Anderson and Hayden Harris. Result is Alec Anderson appearing to be kicked out of practice as he runs off the field towards the locker room afterwards," Getzenberg reported. The Buffalo News ' Katherine Fitzgerald added that Harris' helmet was ripped off in the scuffle.

Joey Bosa got most of Thursday off as the Bills are making sure they protect him as best they can from injury.

When Buffalo Bills running back Ray Davis hit the field for training camp on Friday, he had a special guest watching from the sidelines.

The Buffalo Bills took a flier on a former second-round WR, adding to Josh Allen's arsenal, much to the quarterback's delight.

But early in the Buffalo Bills' training camp practice Friday on the campus of St. John Fisher University, star running back James Cook lined up near the sideline for a pass thrown by a coach. Sneaking in from behind, unnoticed by Cook, was MVP quarterback Josh Allen.