As expected, starting center David Baas was not at practice on Wednesday.
Baas is undergoing tests for what the Giants say are "intense headaches," which have also led to neck issues.
"It is much more serious than a headache obviously," Tom Coughlin said on Wednesday morning.
Baas was a late scratch on Sunday against Green Bay due to the headaches.
For more on Baas, click here.
Safety Kenny Phillips, who left Sunday's game with a knee injury, was riding the bike on the sideline Wednesday.
Phillips' availability for Sunday's game at Dallas is unclear at this point.
Mark Herzlich (ankle) and Osi Umenyiora (ankle/knee) were not at practice. Herzlich suffered an ankle injury in the New Orleans game and has been out since. He was seen in the locker room on Monday with a boot on his foot.
Umenyiora also injured his ankle in New Orleans. He is expected to miss his second straight game on Sunday.
Michael Boley (hamstring) and Brandon Jacobs (hamstring) were both present during the early portion of practice on Wednesday. It is unclear what they were able to do during the workout.
Also, linebacker Spencer Paysinger (hamstring) ran on the sideline. Dave Tollefson (knee), Mario Manningham (knee), Ahmad Bradshaw (foot) and Prince Amukamara (back) were all present and appeared to be active.
Check back here for an update on injuries later today. The official injury report should be released in the late afternoon.
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