OXNARD, Calif. (AP) _ Dallas Cowboys receiver Terrell Owens missed his second practice Friday because of a sore left hamstring.

Owens, who said he first felt a twinge Wednesday, instead rode an exercise bike at the morning practice. He said Thursday he wasn't sure whether he'd be ready for Saturday's controlled scrimmage.

Dallas Cowboys owner Jerry Jones said he's not concerned, and there are no plans for medical tests.