Browns cornerback Eric Wright did not practice Friday with a left hamstring injury he said he suffered in practice Thursday.
He was listed as questionable for Sunday's home game against San Diego.
He spent the beginning of Friday's practice on the exercise bike. Asked about his availability for Sunday, Wright said, ''That's something we have to see. I'll be back when I'm ready, basically. I've got to rehab and see how it goes.''
Defensive coordinator Rob Ryan hopes Wright can play.
''Hopefully hes not doing any bicycling, hopefully on Sunday he's playing ball,'' Ryan said. ''I haven't imagined the defense without him yet. I'm counting on him. With this receiving corps, especially with (Vincent) Jackson, we need Wright, no question.''
Wright is the Browns' best defensive back and was expected to spend much of Sunday covering San Diego Chargers receiver Vincent Jackson. Jackson has caught 49 passes for 815 yards and seven touchdowns.
The Browns are already without free safety Brodney Pool, placed on injured reserve Wednesday after suffering his fourth concussion in five years Sunday at Cincinnati.
Defensive end Kenyon Coleman said was listed as out after taking a helmet to the knee against the Bengals. But he is hopeful he won't have to go on injured reserve.
''I'm taking it day by day,'' Coleman said. ''I'm working hard to get back as soon as possible.''
Outside linebacker Kamerion Wimbley (knee) was on the field Friday for the first time this week, but said his status could be a game-time decision. He's questionable, along with offensive lineman Rex Hadnot (knee) and fullback Lawrence Vickers (hamstring).
If Wimbley is sidelined, he would be missing only the second game of his four-year career, the first coming at Pittsburgh earlier this season when he was driven home with the flu. Wimbley also missed just four games in his college career at Florida State, all during his senior year with a sprained MCL.