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.
Detroit Lions wide receiver Calvin Johnson (81), defended by Miami Dolphins cornerback Brent Grimes (21), catches 49-yard pass for a touchdown during the first half of an NFL football game in Detroit, Sunday, Nov. 9, 2014. (AP Photo/Rick Osentoski) FILE - In this Nov. 9, 2014, file photo, Detroit Lions wide receiver Calvin Johnson waves to fans after defeating the Miami Dolphins 20-16 in a NFL football game in Detroit. Calvin Johnson has retired. The 30-year-old receiver, known as Megatron, announced his decision Tuesday, March 8, 2016, to walk away from the NFL after nine mostly spectacular seasons with the Detroit Lions. (AP Photo/Paul Sancya, File) NEWARK, NJ - APRIL 20: Ilya Kovalchuk #17 of the New Jersey Devils skates against the Florida Panthers at the Prudential Center on April 20, 2013 in Newark, New Jersey. The Devils defeated the Panthers 6-2, (Photo by Bruce Bennett/Getty Images) *** Local Caption *** Ilya Kovalchuk Tennis player Kim Clijsters – Before her planned first retirement in 2007 at the age of 24, she won the U.S. Open in 2005. After a year off (and the birth of a daughter), she returned in 2009, added three more Grand Slam titles and retired again in 2012.