Sean Doolittle, Baseball's Left-Wing Lefty, Retires
Deion Sanders and the Joys of Hype
Sean Doolittle, part of Nats' World Series team, retires - The Washington Post
Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors - WTOP News
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Sean Doolittle retires after path led to All-Star, World Series honors
Washington Nationals reliever Sean Doolittle heads to IL with sprained elbow - ESPN
Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors – NBC4 Washington
Sean Doolittle, part of Nats' World Series team, retires - The Washington Post
A's Pitcher Sean Doolittle Turns Plan B Into Good Career Move - The New York Times
Jose Castillo on comeback trail again for Padres - The San Diego Union-Tribune
2021 MLB season preview -- Power rankings, best (and worst) case and most exciting player for all 30 teams - ESPN
