Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors
Washington Nationals Pitcher Sean Doolittle Sounds Off On MLB Restart - Sports Illustrated
How Nationals closer Sean Doolittle became a dominant one-pitch reliever - The Washington Post
Sean Doolittle explains why many baseball players don't talk politics
A's Q&A: Sean Doolittle among baseball's best at doing for others
Oakland Athletics Player Sean Doolittle on Refugee Crisis
Sean Doolittle, Baseball's Left-Wing Lefty, Retires
Nationals' Sean Doolittle rejects White House invite: 'Just can't go
Way more common than people realize': How some in MLB are bringing mental health into focus - The Athletic
MLB Pitcher Sean Doolittle Plays Not My Job On 'Wait Wait Don't Tell Me' : NPR
Is Covid-19 exposing MLB players as exploited workers or greedy millionaires?, MLB