FILE--Miami Dolphins quarterback Dan Marino hold up his trophy for Most Valuble Player in the National Football League awarded by the Pro Football Writers of American in this Jan 7, 1985 photo in New York. Marino, the most prolific passer in NFL history, will announce his retirement Monday, a source close to the quarterback said Friday, March 10, 2000. The Dolphins confirmed a news conference for Marino is planned Monday, March 13. (AP Photo/David Pickoff)