The Mets once again have Sean Doolittle's number in unlikely walk
Can anyone catch the New York Yankees? Second-half preview, rankings, playoff odds for all 30 MLB teams - ABC7 Chicago
Sean Doolittle feels 'like a rookie again' ahead of second stint with Nationals - WTOP News
Nationals To Sign Sean Doolittle - MLB Trade Rumors
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Vesting option could allow Washington Nationals' closer Sean Doolittle to become a free agent after this season - Federal Baseball
Nationals re-sign Sean Doolittle to minor league contract
Washington Nationals need Sean Doolittle to be Sean Doolittle again; and he's almost there - Federal Baseball
Washington Nationals News: Former closer Sean Doolittle signs in Cincinnati; Spring Training approaches + more - Federal Baseball
Sean Doolittle pledges to pay Nationals minor leaguers' salaries, might help you feel a tiny bit better about the world, This is the Loop
Nationals' Sean Doolittle Declines Trump White House Visit
The Mets own Nationals closer Sean Doolittle this season