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1983: Former pro football player Jim Brown poses for a photo in December of 1983. Jim Brown played for the Cleveland Browns from 1957-1965. (Photo by George Rose/Getty Images)

Odd and premature sports retirements

Yahoo Sports

The Detroit Lions announced Tuesday that WR Calvin Johnson has retired. Johnson, who walks away at age 30, signed a 7-year contract extension in 2012 worth $113.5 million. Here's a look back at some other odd, abrupt or premature retirements by star athletes over the years.