Former Oakland A's, Washington Nationals reliever announces retirement

A's pitcher Trevor May rips Oakland owner John Fisher in retirement video: 'Sell the team, dude', DC News Now

Reliever Sean Doolittle announces MLB retirement after 11 seasons – NBC Sports Bay Area & California

Two-time All-Star reliever announces retirement

Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors - WTOP News

Trevor May announces retirement from MLB

Saluting Sean Doolittle, one of the good ones

MLB trade rumors and news: Ryan Zimmerman calls it a career - MLB Daily Dish

Jon Lester - Wikipedia

Sports digest: Oakland A's acquire reliever from Washington Nationals – The Mercury News

Oakland Athletics News & Updates - FanSided

Ryan Zimmerman, 16-year veteran and World Series champion, announces retirement from Nats

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