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BALTIMORE - AUGUST 13: Ray Lewis #52 of the Baltimore Ravens waits to get into the game against the Philadelphia Eagles on August 13, 2007 at M&T Bank Stadium in Baltimore, Maryland. (Photo by G Fiume/Getty Images)

Ravens star linebacker Ray Lewis to retire

Ray Lewis, who hasn't played since October because of a torn right triceps, announced he will retire after 17 seasons to spend more time with his sons. The fearsome 13-time Pro Bowl linebacker symbolizes the NFL – not just the Ravens, says Yahoo! Sports' Jason Cole, and is well known for his explosive personality.