EAST RUTHERFORD, N.J. – The Giants' offensive line remains a constantly-evolving entity.

Marshall Newhouse, who has started every game at right tackle, will not practice today because of a back issue that landed him on an injury report for the first time this season. Coach Tom Coughlin said rookie Bobby Hart will work in Newhouse's spot.

Center Weston Richburg (ankle) and left guard Justin Pugh (concussion) will practice on a limited basis as the Giants begin preparation for their game Sunday against the Jets. Richburg did not play last week in Washington, and Pugh has missed the last two games.

The Giants lost another lineman for the remainder of the season when they placed guard Geoff Schwartz on injured reserve yesterday because of the fractured lower left leg he suffered against the Redskins. Hart initially stepped in for him at left guard before moving to right guard, with John Jerry going in the opposite direction. With the status of Newhouse, Richburg and Pugh subject to change, the composition of the Giants' line on game day remains uncertain.

"(Our) hope is that they both (Richburg and Pugh) make it," Coughlin said. "Whether that's realistic, I'll let you know. Today, I think, hopefully Pugh will be able to go and feel better after practicing, and then he can increase the workload the next day. And we'll do what we have to do on the right side. With Newhouse missing today, Hart will be in there, have an opportunity there. We'll see how Newhouse does tomorrow."

In addition to Newhouse, tight end Larry Donnell (neck) and safety Brandon Meriweather (knee) will not practice.

Defensive end Jason Pierre-Paul is on the injury report for the first time with soreness in his right hand, the one wounded in the July 4 fireworks accident. But he will practice.

"It's nothing that he can't deal with," Coughlin said.

Defensive end Robert Ayers (toe) and linebacker Devon Kennard (knee/hamstring) will also practice.

"You saw him limping in the game, that's why we put him on there (the injury report)," Coughlin said of Kennard. "But he told me this morning he's going."