According to reports, former Alabama star Trent Richardson has a sore knee and could miss his highly anticipated rookie debut with the Cleveland Browns.
The reports say Richardson sat out of Cleveland's practice on Tuesday.
The sore left knee is the same one he had scoped in February.
The Browns play the Detriot Lions in their preseason opener on Friday.
The reports say Richardson will be evaluated by the team's medical staff on Tuesday afternoon.
His status for Friday's preseason opener will be determined later.
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