Sammy Watkins (ribs) participates fully

ORCHARD PARK, N.Y. -- Buffalo Bills wide receiver Sammy Watkins was a full participant in Wednesday's practice, the team's second this week in advance of Sunday's regular season opener against the Chicago Bears.

Coach Doug Marrone, however, would not commit to Watkins playing on Sunday.

"I think we're just going to wait and see, really, for the game," Marrone said Wednesday. "I think it's hard to judge right now."

Here is the Bills' full injury report:

Did not participate:

TE Lee Smith (toe)

Limited participation:

LB Randell Johnson (ankle)

S Jonathan Meeks (neck)

CB Stephon Gilmore (groin)

Full participation:

WR Sammy Watkins (ribs)