Jason Hatcher (97) works on rehab of his knee last week in camp. (Photo by John McDonnell/The Washington Post)

RICHMOND – Defensive end Jason Hatcher is nearing the end of his rehabilitation period and will soon join his teammates on the practice field, coach Jay Gruden said. Washington’s medical staff has yet to set a return date for Hatcher’s return. But he continues to make strides, and Gruden believes he could be activated soon.

“He’s very, very close. I can tell you that,” Gruden said when asked about Hatcher’s recovery.

Hatcher had arthroscopic surgery on his left knee on June 20. Doctors originally told him to expect a four- to six-week rehab period. Hatcher opened training camp on the physically unable to perform list, but he can be activated at any time. The 11th-year veteran has increased the level of his in the last week, and had experienced no setbacks.

Fourth-year pro Jarvis Jenkins has started at right end in Hatcher’s place.

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:

The Redskins’ joint practice with the New England Patriots on Tuesday is at 1:35 p.m. Here’s our camp guide.

Also from The Post:

Training camp observations from Day 12

Griffin says offense okay despite rough practice

Brady exposes weaknesses in Redskins’ defense

Reid: Redskins could learn at lot from New England

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