Injury report

Giants WR Mario Manningham (concussion) participated in the portion of Thursday’s practice open to the media, a day after he sat out with the concussion.

Tom Coughlin said on Wednesday that Manningham would undergo further testing to gauge his availability. Manningham underwent a test Wednesday morning before he was held out of practice.

Manningham told the Giants of his injury after Sunday's loss to the Titans. His status for Sunday’s game against Chicago remains unclear.

C Shaun O’Hara (ankle/achillies) missed practice. O’Hara hasn’t participated in practice since prior to the Giants' Week 2 game in Indianapolis. It’s almost certain that O’Hara will not start on Sunday night against Chicago. Look for backup OL Adam Koets to start in his place. O’Hara saw a specialist earlier this week about the injury, which he first suffered in training camp.

LB Keith Bulluck (toe) was in pads and participated in some drills during the portion of practice open to the media. He sat out Wednesday's practice with the toe ailment. DT Rocky Bernard (back) was not on the field during the time the media is permitted in the practice bubble.

Darius Reynaud (headaches) returned to practice, but participated with a wrap on his right calf. The extent of the injury is unknown at this point.