Ravens cornerback Marlon Humphrey has a calf strain and his return is day-to-day, according to a report from NFL Network's Ian Rapoport.
The Ravens have a short five-day turnaround before playing the Cincinnati Bengals on "Thursday Night Football" at M&T Bank Stadium, and it remains to be seen whether Humphrey will be able to return in time to play.
Baltimore conducted a walk-through practice Monday, meaning the team's injury report was an estimation. Humphrey was listed as a non-participant.
Rock Ya-Sin stepped in for Humphrey the rest of the way after the third quarter injury and would likely fill in if Humphrey isn't able to play Thursday. The Ravens also have Ronald Darby, who has played outside this season.
Left tackle Ronnie Stanley has a knee injury and was also listed as a non-participant at practice Monday. Right tackle Morgan Moses (shoulder) was once again a full participant. If he can play against the Bengals, that would allow Patrick Mekari to swing to left tackle to fill in for Stanley if he can't suit up.
Outside linebacker Kyle Van Noy (groin) and safety Daryl Worley (hamstring) were listed as limited. Rookie linebacker Trenton Simpson (concussion) was sidelined.
The Bengals have injury concerns of their own with three key players banged up.
Defensive end and top pass rusher Trey Hendrickson reportedly hyperextended his knee on the final play of Sunday's loss to the Texans. Wide receiver Tee Higgins is still dealing with a hamstring injury suffered in practice last week. Defensive end Sam Hubbard (ankle) was also listed as a non-participant Monday. The Bengals didn't practice so it was also an estimation.
