Sources: No Ravens deal yet, official or notIn the latest sign that Deion Sanders is serious about a potential comeback with the Baltimore Ravens, personal trainer Tom Shaw will go to Dallas soon to help ramp up the workouts of the seven-time Pro Bowl cornerback, ESPN.com has learned.Shaw, of New Orleans, has worked with Sanders in the past. The onetime college track coach, who prefers to be billed as a "performance enhancement specialist," is frequently retained by agent Eugene Parker, who represents Sanders, to help...

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