Washington wide receiver Santana Moss, left, converses with Pierre Garcon on Day 3 of training camp. (John McDonnell/The Washington Post)

RICHMOND — Wide receiver Pierre Garcon remained restricted in his activities because of a sore hamstring on Thursday.

Garcon left Monday’s practice after tweaking the hamstring. The team had Tuesday off, and he did warmup with teammates on Wednesday, but was held out of team drills.

On Thursday, Garcon took the field in pads and game pants, and did individual drills, but again was held out of team activities.

Coach Jay Gruden said on Wednesday that the team would take a cautious approach with the team’s No. 1 wide receiver. Garcon had wanted to practice, but the team’s medical staff thought better of it, and kept him sidelined.

Meanwhile, backup outside linebacker Adrian Robinson returned to action after missing Wednesday’s practice.

However, safety Phillip Thomas (hamstring) and defensive end Doug Worthington (hamstring) both continued to work on a separate field with the team’s trainers and didn’t practice. It marked the second straight missed practice for Thomas and the fourth for Worthington.

Starting right tackle Tyler Polumbus missed a second consecutive practice. Gruden said on Wednesday that Polumbus was on an excused absence to tend to a personal matter.

Have a Redskins question? Send an e-mail to mike.jones@washpost.com with the subject line “Mailbag question,” and it might be answered on Tuesday in The Mailbag.

What’s ahead:

Washington is next on the field for a 4:10 p.m. walkthrough. Here’s our camp guide, if you’re planning to attend.

Also from The Post:

Clark and Moss perfect the art of playing into their mid-30s

Lauvao makes strides, adjusts to Wash. offense

Gruden explains his roster-culling philosophy

Reid: Redskins should keep Hatcher out of preseason

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