Nationals reflect on Sean Doolittle, retirement
Ex-Nats reliever Sean Doolittle exits after '11 incredible seasons' - ESPN
2-Time All-Star Pitcher Announces Retirement At 36 - The Spun: What's Trending In The Sports World Today
Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors - NBC Sports
Nationals' Sean Doolittle retiring after more than a decade in the majors
I just can't do it': Nationals pitcher Sean Doolittle declines White House invite, Washington Nationals
All-Star reliever Sean Doolittle retires after 11 seasons - Field Level Media - Professional sports content solutions
Nationals pitcher Sean Doolittle announces his retirement after more than a decade in the majors - WTOP News
Nationals fan-favorite announces retirement with awesome Immaculate Grid reference
Nationals' Sean Doolittle retiring after more than a decade in the majors
Sean Doolittle announces his retirement from the Nats after 11 seasons