Sean Doolittle, Baseball's Left-Wing Lefty, Retires
Washington Nationals reliever Sean Doolittle heads to IL with
Nationals pitcher Sean Doolittle announces his retirement after
Sean Doolittle, part of Nats' World Series team, retires - The
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New Washington Nationals' relievers Sean Doolittle and Ryan Madson
Sean Doolittle] Announces retirement from baseball : r/baseball
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Sean Doolittle retires
Sean Doolittle Announces Retirement - MLB Trade Rumors