BY GREG LOGAN AND TOM ROCK
Mario Manningham, who sat out Wednesday's practice with a slight concussion, passed the requisite tests and was back on the practice field yesterday.
"I'm good, I'm good," the team's leading receiver said. "I'm going to be ready to play Sunday. I was cool, just had a little headache."
The injury occurred when Manningham caught a short pass, was tackled by two defenders and was hit in the head by the Titans' Michael Griffin.
"I was mad that he jumped on me," Manningham said. "I didn't feel nothing. It was the end of the play. My first reaction was to get up and try to do something, but I couldn't do nothing."
Keith Bulluck tried to practice, but his turf toe injury bothered him so much during drills that he had to step off the field. Still, he remains optimistic about being able to play Sunday.
"I like my chances," said Bulluck, who came back from knee surgery at the end of last season in time for training camp. "I'm a pretty quick healer. I've been able to overcome a lot of injuries faster than most people would."
Not must-win yet
DE Justin Tuck said Sunday's game against the Bears is not a "must-win" for the Giants. "I've seen teams win eight games and make the playoffs, so if I do my math right, we have about six more losses before we have a must-win game," he said.
Coughlin said he will not change the order in which he is using running backs Ahmad Bradshaw (52 carries) and Brandon Jacobs (20). . . Kick returner Darius Reynaud returned to practice after missing Wednesday with a headache.