Justin Tuck, Hakeem Nicks sit out

EAST RUTHERFORD, N.J. -- Wide receiver Hakeem Nicks and defensive end Justin Tuck surprisingly both sat out practice on Friday but vowed to play against the Dallas Cowboys.

Nicks has a tight hamstring that he says is a little fatigued but will not hold him out of Monday night's game.

"I am definitely playing," Nicks said. "There is no question about that, it is Monday Night Football."

"Everything is going to be fine," the wideout added. "More than likely, back to work tomorrow."

Tuck said he has been dealing with a sore ankle for weeks now. He said he will practice on Saturday and will play against the Cowboys.

"It will be all right," Tuck said. "Something we have been dealing with for a while now. I don't know exactly when it happened. It is something we have been [dealing] with for a while now. It got to the point where we wanted to rest it today. I'll play. I will be out there tomorrow."

Both Tuck and Nicks sitting out came as a surprise since the two key Giants were not listed on this week's injury report.

Head coach Tom Coughlin said he expects Tuck to play and is hopeful for the same thing with Nicks.

Defensive end Osi Umenyiora has been managing a knee issue for weeks now. The routine has been to sit out the first day of practice and then work the rest of the week. Following routine, he skipped Thursday's practice for precautionary reasons and worked a bit on Friday.

Tackle William Beatty (foot) and defensive end Mathias Kiwanuka (neck) will be out this week. Fullback Madison Hedgecock (hamstring) will likely miss the game as well.

Ohm Youngmisuk covers the Giants for ESPNNewYork.com. Follow him on Twitter.