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WILLIAMSBURG, VA - MAY 11: Annika Sorenstam of Sweden hits her tee shot on the 15th hole during the final round of the Michelob Ultra Open at Kingsmill Resort & Spa on May 11, 2008 in Williamsburg, Virginia. (Photo by Hunter Martin/Getty Images)

Odd and premature sports retirements

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.