BEREA, Ohio — Cleveland Browns linebacker Antwan Peek has suffered a season-ending knee injury.

Coach Romeo Crennel said today that Peek ruptured his right patellar tendon while running during yesterday's workout.

It's a big setback for a Cleveland defense which ranked 30th overall last year and must face the Dallas Cowboys on Sunday.

The club will re-sign Shantee Orr, who was waived last week, to fill Peek's roster spot.

Crennel said Orr will likely see playing time Sunday along with rookie Alex Hall, a seventh-round pick who had an impressive training camp and exhibition season.

Peek was signed as an unrestricted free agent in 2007 after spending four seasons with Houston.