Browns center LeCharles Bentley was cleared by his surgeon to return to the playing field on Monday, another major step in his unexpected comeback from a career-threatening knee injury. "I passed it," Bentley said excitedly on the phone from New York. "I'm good to go." Bentley had a physical with Dr. Russell Warren, the New York Giants' team physician who performed two operations on the two-time Pro Bowler, whose injury was complicated by a staph infection.