Sean Doolittle retires, his gratitude far outweighing any regret - The Washington Post
Sean Doolittle, Major League Baseball, News, Scores, Highlights, Stats, and Rumors
Doolittle announces retirement after 11 MLB seasons - Blog
Nationals' Sean Doolittle Declines Trump White House Visit
Sean Doolittle pledges to pay Nationals minor leaguers' salaries, might help you feel a tiny bit better about the world, This is the Loop
D.C.'s favorite bearded, bespectacled baseball player to pitch with Nationals again : NPR
Doolittle announces retirement after 11 MLB seasons - Blog
Sean Doolittle Retires After 11 MLB Seasons; Won 2019 World Series with Nationals, News, Scores, Highlights, Stats, and Rumors
Longtime Washington Nationals, Oakland Athletics Reliever Sean Doolittle Retires - Fastball
I just can't do it': Nationals pitcher Sean Doolittle declines White House invite, Washington Nationals