Nats get Madson, Doolittle from A's for Treinen, prospects
139 Sean Doolittle Explains How the Nationals Learned to Have
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Washington Nationals pitcher Sean Doolittle to join Cincinnati
Reliever Sean Doolittle announces MLB retirement after 11 seasons
D.C.'s favorite bearded, bespectacled baseball player to pitch
Nationals pitcher and LGBTQ ally Sean Doolittle retires from MLB
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Sean Doolittle pledges to pay Nationals minor leaguers' salaries
Sean Doolittle - Wikipedia
Washington Nationals need Sean Doolittle to be Sean Doolittle
Athletics' Sean Doolittle's putting up mind-blowing numbers
World Series Champion Sean Doolittle Announces Retirement