ASHBURN, Va. — Redskins cornerback Fred Smoot has been downgraded to questionable for Washington's game against the St. Louis Rams.

Smoot first appeared on the injury report Friday as probable with a rib injury. The Redskins haven't said how the injury occurred.

Smoot is Washington's third cornerback, used primarily in nickel packages with starters DeAngelo Hall and Carlos Rogers.

If Smoot can't play on Sunday, second-year player Justin Tryon will likely see more playing time.