Center LeCharles Bentley sustained an injury to his left knee during the Browns' first 11-on-11 drill of training camp on Thursday.
Bentley got tangled in a pile of players as he was blocking on a running play for Reuben Droughns.
May 2006 - Cleveland Browns Wiretap
Winslow Will Participate In All Training Camp Drills
Over the past two years, Kellen Winslow Jr. has suffered a fractured fibula, torn ankle ligaments and a torn anterior cruciate ligament - all on his right leg.
Recently, Winslow was pronounced 100 per cent ready to participate full time in all training camp drills.
The Browns are expected monitor his return closely and spare him from practicing twice on the same day.
Browns Sign Rookie LB Wimbley On Saturday
The Browns signed first-round pick Kamerion Wimbley to a six-year, $23.7 million deal Saturday.
The linebacker, taken 13th overall, is the second player selected in the first round to reach a deal. No. 1 overall pick Mario Williams signed with the Texans before the draft.
"It shows the fans and the team I'm ready to be a Brown," Wimbley said.
Former Browns' Captain Galen Fiss Has Died
Galen Fiss, captain of the Browns' last championship team and former teammate in other sports of Dean Smith and Roger Maris, has died. He was 75.
Fiss, who had Alzheimer's disease, died Monday of cardiac arrest at Menorah Medical Center in Overland Park, Kan., a suburb near his home in Leawood, Kan.
Fiss was a linebacker on the Cleveland team that upset the Baltimore Colts 27-0 to win the 1964 title.
Browns Sign Cribbs, Holly
Kick returner Joshua Cribbs signed a one-year contract Wednesday with the Browns.
Cribbs averaged 24.3 return yards on 45 kickoffs in 14 games last season as a rookie. His 1,094 return yards set a franchise record.
The former undrafted free agent also returned a kickoff 90 yards for a touchdown against Detroit. Cribbs, who is listed as a wide receiver, played quarterback at Kent State.
The Browns also signed free-agent defensive back Daven Holly to a two-year deal. Holly played in three games for Chicago as a rookie last season.