Redskins wide receiver DeSean Jackson writhes in pain after suffering an injury during Sunday’s win against the Giants. (Toni L. Sandys/The Washington Post)

Redskins wide receiver DeSean Jackson sat out Wednesday’s practice after aggravating the knee and ankle injuries that he suffered in Sunday’s game. Jackson watched his teammates practice, but there’s no word yet on whether he could miss significant time or will return to action Thursday, like he did last week.

Meanwhile, left guard Shawn Lauvao and cornerback Bashaud Breeland did not practice. Both players suffered ankle injuries in Sunday’s win over the Giants and will be monitored on a week-by-week basis, Coach Jay Gruden said on Monday.

Coaches began shuffling offensive linemen with Lauvao out and starting center Kory Lichtensteiger now on injured reserve with a strained calf. Rookie wide receiver Josh Doctson also did not practice because of the pain that has returned in his right Achilles’ tendon. Cornerback Dashaun Phillips worked on a side field with trainers, rehabbing his strained hamstring.

Guard Arie Kouandjio blocks during rookie camp in 2015. (Pete Marovich/For The Washington Post) Guard Arie Kouandjio blocks during rookie camp in 2015. (Pete Marovich For The Washington Post)

Spencer Long took over at center, while second-year pro Arie Kouandjio took reps at left guard. Long had served as the backup guard and center in the first three games of the season and replaced the injured Lichtensteiger on Sunday. Kouandjio was inactive for each of the first three games.

The Redskins on Tuesday signed former Vikings starting center John Sullivan after hosting him for a workout. Sullivan took snaps behind Long during the early portion of practice.

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