Redskins backup quarterback Colt McCoy would likely replace Nick Sundberg if the long snapper is unable to play Sunday night. (Jason Behnken/Associated Press)

Wide receiver DeSean Jackson and right tackle Morgan Moses both took part in Friday’s practice at Redskins Park, but long snapper Nick Sundberg did not. The team will list all three as questionable, however, on the final injury report of the week.

Jackson missed last game with an injured left shoulder and was limited in practice Wednesday and Thursday. Moses has nursed a sprained left ankle the past two weeks but did practice fully Wednesday and Thursday. He still walks with a noticeable limp and has his ankle heavily wrapped.

Asked about Jackson’s prospects of playing, Coach Jay Gruden said, “It could go up to game time. We’ve got six receivers on our 53 [man roster] that we feel really good about right now, so we’ll see how he does through pregame warmups, see how he feels, make sure if he’s feeling good, he’s feeling really good and then make that determination.”

Referring to the prospects of Moses playing, barring a setback, Gruden said it’s “looking pretty good.”

Sundberg missed a second straight day of practice after tweaking a muscle in his back while lifting weights. Gruden said Sundberg, who has spent his entire seven years with the Redskins, still is walking gingerly because of the discomfort in his back.

The coach said a decision on Sundberg will be made Saturday. The team worked out two long snappers Friday but didn’t immediately sign either, wanting to wait until Saturday to make a decision.

If Sundberg were to feel well enough to play and then have a setback in Sunday’s game, Gruden revealed that backup quarterback Colt McCoy had emerged as an emergency long-snapper.

“Colt McCoy is pretty good, actually. Not much of a blocker, but neither is Sundberg,” Gruden joked. “They can’t cover up the center anyway. But really, it would be Colt.”

Gruden said that coaches tried out “everybody who had shoulder pads; everybody who was dressed,” to see who could handle the snapping duties, and that McCoy did the best.

The coach joked that “we’ll probably be going for it a lot on fourth downs.”

Center Spencer Long said he doesn’t have what it takes to be an effective long- snapper.

“It’s totally different. It’s way faster; it’s a bullet. It’s two-handed. It’s way different technique,” said Long, who this year transitioned from guard to center. “It’s definitely a specialty.”

McCoy was rushing to leave Redskins Park after practice because his wife was scheduled to be induced. But when asked about his long-snapping ability as he jogged up the steps, he said, “Absolutely! Have you not seen me?”

Long said that McCoy had told him he had snapped in a game before but wasn’t sure whether he meant in college, at Texas, or in high school.

Punter Tress Way, who played his college ball at Oklahoma, handled McCoy’s practice snaps as a punter and as the holder on the field goal unit and said, “Hate to give credit to a Longhorn, but the dude can snap.”