Washington Nationals' Sean Doolittle set for elbow surgery; season over - ESPN
Sean Doolittle hopes for Nationals' reunion - The Washington Post
Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors
Sean Doolittle excited to return to Nationals in 2023
Spring Training Job Battles: Mid-March Update
Beloved relief pitcher Sean Doolittle is back with the Washington Nationals
Nationals players pledge compensation for team's minor leaguers
Sean Doolittle hopes for Nationals' reunion - The Washington Post
Sean Doolittle: Player News - NBC Sports
Sean Doolittle hopes for Nationals' reunion - The Washington Post
Sean Doolittle retires after path led to All-Star, World Series honors