ALLEN PARK -- Detroit Lions cornerback Chris Houston concluded a week without practice on Saturday, sitting out for a third consecutive day with a toe injury as the team prepares to face the Baltimore Ravens on Monday night.

Houston had previously been dealing with a foot injury that sidelined him for the Lions' Thanksgiving win over the Green Bay Packers. He returned to the lineup against the Philadelphia Eagles, only to suffer the toe ailment.

Also missing practice for the Lions were cornerback Darius Slay (knee) and safety Louis Delmas (knee).

Slay had knee surgery last week to repair a meniscus issue.

The injuries to Houston and Slay leave the Lions with just four healthy cornerbacks.

If Houston can't go on Monday night, Jonte Green would likely get his first start of the season. It would also open the door for Chris Greenwood to be active for the first time in his career.

The Lions will release game designations for all injured players at 4 p.m. on Saturday.

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