Longtime Red Sox ace Jon Lester retires after 16 MLB seasons
Jon Lester retires
Jon Lester retires
Jon Lester retires: Former Red Sox, Cubs ace concludes 16-year
Former Cardinal Jon Lester Retires
Former Cardinals pitcher Jon Lester announces retirement
Former Cubs pitcher Jon Lester, part of team's World Series core
Jon Lester's retirement reminds us Red Sox never should have let
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Jon Lester Calls It A Career
Jon Lester: Former Chicago Cubs, Boston Red Sox ace retires
Gregor: Lester, a standout Cubs starter for 6 seasons, calls it a
B/R Walkoff - Jon Lester has announced his retirement. 3-time