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6 Apr 1987: Sugar Ray Leonard (left) fights Marvin Hagler during a bout at Caesar''s Palace in Las Vegas, Nevada. Leonard won the fight by a decision in the twelfth round. Mandatory Credit: Allsport /Allsport

Odd and premature sports retirements

Yahoo SportsMarch 8, 2016

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.