DeSean Jackson limited in return

RICHMOND, Va. -- Washington Redskins receivers DeSean Jackson and Pierre Garcon returned to practice, though neither participated in the full session after missing the preseason opener with various injuries.

Jackson participated in individual drills after missing the New England game on Thursday with a mild ankle sprain. Garcon took part in some seven-on-seven work as well as some full-team sessions, but did not work in all of them.

Meanwhile, running backs Roy Helu (knee) and Chris Thompson (ankle) did not work because of injuries that coach Jay Gruden termed mild. Both worked on a side field. Safeties Ryan Clark (hamstring) and Phillip Thomas (hamstring) did not practice after missing the Patriots game. Center Mike McGlynn, who missed the game with back spasms, was back on the field Saturday.

Gruden said corner Tracy Porter, who sat out Thursday, probably won't play until the third preseason game. He had offseason shoulder surgery and the Redskins want to make sure his shoulder is 100 percent before putting him in a game.

As for Clark, Gruden said they want to take it slow with him to make sure his hamstring is healed.

"We're going to be very safe with him," Gruden said.

Also, tight end Jordan Reed missed practice with a stomach virus. Tight end Mike Caussin had swelling in his knee and did not practice.