ALLEN PARK, Mich. -- The Detroit Lions were down two cornerbacks during Friday's practice.

Starter Chris Houston (toe) and reserve Darius Slay (knee) were both missing from practice, but showed up to watch on the sidelines.

Reggie Bush, Ziggy Ansah and Israel Idonije were all back practicing for Detroit on Friday.

If Houston and Slay cannot play Monday, the Lions could rely on Jonte Green or Bill Bentley at cornerback opposite Rashean Mathis.