Shaun O'Hara arrived at the Giants' practice facility Thursday wearing a cast on his left leg in an attempt to control tendinitis, soreness and swelling in his ankle and Achilles tendon that have bothered him for the duration of training camp.
O'Hara and Giants coach Tom Coughlin both said they hope the cast will allow the leg enough time to heal.
"That's really our mindset," O'Hara said. "We've been on that roller coaster up and down, where it's feeling good and then it's feeling bad, and rather than risk doing that the entire season, if we can calm everything down and make a significant improvement over these next few days, then hopefully it's an afterthought once we get to Week 2."
The cast will remain on for three to five days, and O'Hara will not play in Saturday's preseason game in Baltimore.
"Don't pin me down yes and no on anything," Coughlin said. "As it is, going in they'll be at one particular spot but they may end up playing at another spot."
Coughlin said no one was talking about surgery to correct the problem, and he expected O'Hara to play the regular season.
Seubert, who had a broken bone in his left hand during training camp, said he knew that if it were the regular season, O'Hara would be out there despite the pain.
The Giants have been plagued with injuries in the preseason. Most notably, Eli Manning sustained a 3-inch cut on his forehead during the first preseason game against the Jets.
On Thursday, 13 players were out or didn't participate in team drills: CB Aaron Ross (plantar fasciitis), QB Jim Sorgi (shoulder); RB D.J. Ware (concussion); S Michael Johnson (back); LB Chase Blackburn (knee); TE Travis Beckum (neck); WR Ramses Barden (back); DT Jay Alford (knee); WR Sinorice Moss (groin); DE Jason Pierre-Paul (groin); CB Terrell Thomas (calf); OL Kevin Boothe (pectoral) and DL Chris Canty (groin).