Ngata questionable after missing practices

OWINGS MILLS, Md. -- Nose tackle Haloti Ngata is the Baltimore Ravens' biggest injury concern heading into Sunday's game against the Chicago Bears.

Ngata is listed as questionable after missing every practice this week. This could be a situation in which the Ravens are simply resting him because he injured his right knee early in Sunday's win over the Cincinnati Bengals and returned to play.

He is one of five defensive starters who are listed as questionable on the injury report. But cornerbacks Lardarius Webb (groin) and linebacker Daryl Smith (thigh) both returned to practice Friday after sitting out two days. Cornerback Jimmy Smith (groin) and safety James Ihedigbo (toe) have been limited all week but both played with their injuries last Sunday.

Wide receiver Marlon Brown (knee) was added to the injury report as questionable after not practicing Friday. He's been dealing with a knee injury recently.

Here is the Ravens' official injury report:

QUESTIONABLE: WR Marlon Brown (knee), NT Haloti Ngata (knee), CB James Ihedigbo (toe), CB Jimmy Smith (groin), CB Lardarius Webb (groin) and LB Daryl Smith (thigh).

PROBABLE: DE Chris Canty (knee), LB Terrell Suggs (neck), RB Bernard Pierce (toe and knee) and WR Brandon Stokley (groin).