White Sox place right-hander Michael Kopech on IL after cyst removed from right knee
Former A's reliever Sean Doolittle returns to Coliseum: 'I grew up here, man
Washington Nationals need Sean Doolittle to be Sean Doolittle again; and he's almost there - Federal Baseball
Sean Doolittle, Baseball's Left-Wing Lefty, Retires
Nationals pitcher and LGBTQ ally Sean Doolittle retires from MLB - Outsports
Sarris: Quick analysis of every signing and trade in the first week of baseball's post-lockout madness - The Athletic
Sean Doolittle retires after path led to All-Star, World Series honors
Washington Nationals: Sean Doolittle kicked to the curb by Reds
Deion Sanders and the Joys of Hype
Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors – NBC4 Washington
Former Oakland A's, Washington Nationals reliever announces retirement
Sean Doolittle, part of Nats' World Series team, retires - The Washington Post
Sean Doolittle, part of Nats' World Series team, retires - The Washington Post
MLB players who might retire after the 2022 season