Redskins head coach Jay Gruden confirmed Wednesday that four players -- defensive ends Stephen Bowen and Jason Hatcher, wide receiver Leonard Hankerson and offensive lineman Maurice Hurt -- will begin training camp on the physically unable to perform (PUP) list.

Bowen twice injured his right knee during the 2013 season -- in a win Oct. 20 vs. the Chicago Bears and then again Nov. 17 against the Philadelphia Eagles. He was placed on injured reserve Nov. 26, underwent surgery, and has spent his entire offseason rehabbing.

Hatcher reportedly underwent minor arthroscopic surgery on his left knee last month. The 32-year-old was one of the Redskins' key free agent signings this offseason, and is coming off a season in which he earned his first Pro Bowl selection, leading the Dallas Cowboys' defense with 11 sacks.

Hankerson has spent his offseason recovering after tearing both his LCL and ACL last season , also against the Eagles. The 6-foot-2 University of Miami product turned in 30 catches for 375 yards and three touchdowns prior to his injury.

Gruden said Hurt will begin on the PUP list for reporting to Wednesday's conditioning tests "out of shape." Hurt -- the Redskins' seventh-round (217th) overall selection in in the 2011 NFL Draft -- is hoping to earn a spot on the roster at either the guard or tackle positions.

'Good to go'Two other players in the Redskins' secondary who have been recovering from surgery this offseason will be full participants when the team opens up training camp practices Thursday morning.

Gruden said cornerbacks Richard Crawford and Tracy Porter are "good to go."

Crawford missed the entire 2013 season after injuring his knee in the Redskins' third preseason game. He'll compete this season for a spot at cornerback, as well as a returner on special teams.

Porter, a seventh-year veteran signed by the Redskins as a free agent in March, missed the team's offseason workouts as he recovered from shoulder surgery.

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