Nationals closer Sean Doolittle says he won't join team's White House visit
Sean Doolittle Announces Retirement After 11 Seasons in MLB
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Sean Doolittle, Baseball's Left-Wing Lefty, Retires
Longtime Washington Nationals, Oakland Athletics Reliever Sean Doolittle Retires - Fastball
Sean Doolittle's little brother is another red-bearded, fastball-hurling reliever
May the Doo be with you - Athletics Nation
Longtime Washington Nationals, Oakland Athletics Reliever Sean Doolittle Retires - Fastball
Sean Doolittle not afraid to stand up for what he believes - The Boston Globe
Oakland A's Pitcher Sean Doolittle, Girlfriend Eireann Dolan, Host Syrian Refugees for Thanksgiving in Chicago – NBC Bay Area