Jamal Lewis returned to practice Wednesday for the first time since pulling a hamstring in the Giants game more than two weeks ago and hopes to be ready for the Cowboys. Browns running back Jamal Lewis on his hamstring injury: "It's real tough when you worked hard all off-season and you want to stay in good shape and stay healthy. Luckily it happened when it did." He was limited, but moved well during the open first-half hour of practice. "Nothing heals a muscle but time and rest," Lewis said before practice. "I've had a lot of [both]. Hopefully it feels good when I go out there and put it to the test." Lewis suffered the injury on his last play early in the second quarter, when he and Derek Anderson botched a handoff that was returned 95 yards for a touchdown. Two plays later, Anderson was knocked out of the game with a concussion. Both players, along with several other starters, sat out the final two preseason games. "You have a lot of guys around the league in preseason who are not really playing -- your LaDainian Tomlinsons, your Peyton Mannings," said Lewis. "I've kind of comforted myself by saying, 'OK, these guys didn't play in the preseason, they're not getting those game reps.' But now the bullets are flying and it's real."Lewis, who puts himself through a grueling off-season workout program, has no history of hamstring troubles. "Nothing more than a tweak here or there," he said. "It's real tough when you worked hard all off-season and you want to stay in good shape and stay healthy. Luckily it happened when it did." Lewis will test the hamstring against an aggressive Cowboys' defense that finished sixth against the run in 2007 with an average of 94.6 yards allowed per game. "They're a great team and we've got our hands full," said Lewis.