Odd and premature sports retirements

�©BOSTON - CIRCA 1955: (UNDATED FILE PHOTO) Baseball legend Ted Williams (1918 - 2002) of the Boston Red Sox (L) laughs as American boxing great Rocky Marciano (1923 - 1969) swings a bat circa 1955. The 83-year-old Williams, who was the last major league player to bat .400 when he hit .406 in 1941, died July 5, 2002 at Citrus County Memorial Hospital in Florida. He died of an apparent heart attack. (Photo by Getty Images)

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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.

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