Ryan Zimmerman - Wikipedia
Nationals fan-favorite announces retirement with awesome Immaculate Grid reference
Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors – KION546
Nationals' Sean Doolittle retiring after more than a decade in the majors
Sean Doolittle Bids Farewell to Nats, But Not DC: “This is Home, Man”
RECAP: Nationals beat Astros 5-4 in Game 1 of World Series
A Long Goodbye to the Nationals' Retiring Pitcher Sean Doolittle - InsideHook
Washington Nationals - The Washington Post
Sean Doolittle retires after 11 MLB seasons, leaving lasting Nationals, A's legacy - The Athletic
Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors
Adon leads Nationals over Marlins 7-4 and Washington climbs out of last place - WTOP News
Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors - WTOP News