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15 May 1996: Press photographers take shots of Los Angeles Lakers guard Magic Johnson after he announced his retirement during a press conference held at the Great Western Forum in Inglewood, California. Mandatory Credit: Jed Jacobsohn/Allsport

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.