Former Oakland A's, Washington Nationals reliever announces retirement
Nationals pitcher Sean Doolittle announces his retirement after
WTOP News, Chevy Chase, Maryland
Ryan Zimmerman - Wikipedia
Nationals pitcher Sean Doolittle announces his retirement after
Nationals pitcher Sean Doolittle announces his retirement after
Phillies rally past Nationals 7-6, complete series sweep - WTOP News
Nationals pitcher Sean Doolittle announces his retirement after
How Nationals closer Sean Doolittle became a dominant one-pitch