CORTLAND, N.Y. — The New York Jets activated starting right guard Willie Colon from the active/physically unable to perform list, and he practiced for the first time at training camp on Sunday.

Colon had offseason arthroscopic knee surgery in late May. He was in full pads and participating in some drills Sunday after missing the first three days of practice. Brian Winters, who started at left guard last season, and Oday Aboushi had been filling in for Colon.

The 31-year-old Colon was re-signed by the Jets in March to a one-year, $2 million deal. He started all 16 games last season, but was recovering from a torn right biceps in the season finale before dealing with the knee issue.

Also, Jets rookie safety Calvin Pryor was diagnosed with a concussion, and tight end Jace Amaro was sidelined in the middle of practice after tweaking his right knee.

Bills

CHANDLER HURTS GROIN: In Pittsford, N.Y., the Buffalo Bills are down another tight end after starter Scott Chandler left practice with a groin injury.

Coach Doug Marrone didn’t have an immediate update on the severity of the injury or how much time Chandler might miss. Chandler was hurt early during the training camp session on Sunday, and did not return after being escorted to the locker room.

The Bills are already down tight end Tony Moeaki, who is out indefinitely after hurting his hamstring on Friday. Tight end Chris Gragg is expected back next week after spending two days in the hospital being treated for heat-related cramps.

Receiver Kevin Elliott did not return after complaining of concussion-like symptoms. He was hurt after being hit by safety Jonathan Meeks on a play at the goal line.

Panthers

FORMER LINEMAN WHARTON TO RETIRE: In Spartanburg, S.C, former Carolina Panthers and Cincinnati Bengals offensive lineman Travelle Wharton is retiring after 10 NFL seasons.

There will be a retirement news conference Tuesday at Wofford College, where the Panthers are training. He is the fourth Panthers offensive lineman to retire this offseason, joining Jordan Gross, Geoff Hangartner and Jeff Byers.

The 33-year-old Wharton played in 115 games and started 111.

A third-round pick out of South Carolina in 2004, Wharton played with the Panthers until 2011 before signing as a free agent with the Bengals. He returned to Carolina last season following a slew of injuries.

Colts

MORGAN PLACED ON IR: In Anderson, Ind., the Colts re-signed running back Davin Meggett after putting linebacker Aaron Morgan on injured reserve Sunday.

Indianapolis did not say what Morgan’s injury was.

Meggett, the son of former NFL running back Dave Meggett, played at the University of Maryland and was on the Colts practice squad in December 2012 but has not played in an NFL game.

The move comes one day after Indy announced running back Vick Ballard would miss the rest of the season with a torn left Achilles’ tendon.

Morgan joined the Colts on Dec. 31 and has played in 18 career games. He was with Jacksonville from 2010 through early October 2012, and then played Tampa Bay until being cut Sept. 5, 2013.