Darius Slay doubtful for Detroit Lions

ALLEN PARK, Mich. -- Rookie cornerback Darius Slay, who suffered a knee injury in practice Thursday, is officially listed as doubtful for Sunday against Philadelphia.

"Still being evaluated. We'll see where that takes us," Detroit coach Jim Schwartz said. "It was sort of a freak thing."

Schwartz said the Lions would find out if Slay's injury would potentially be a long term injury later Friday.

In other cornerback-related news, Chris Houston is officially listed as questionable with a foot injury that kept him out of the Thanksgiving Day game against Green Bay.

If Slay is unable to play, cornerback Jonte Green, who has played sparingly all season, could be an option as a reserve. Another potential option would be to move Bill Bentley outside from the nickel spot he currently inhabits and play Don Carey more in the nickel.

Other than Slay and Houston, Detroit is fairly healthy for the Lions. Running back Reggie Bush is officially questionable with a calf injury, but he practiced Friday.