Without Sean Doolittle, the Washington Nationals in all likelihood would be one of the worst teams in Major League Baseball. Throughout the course of the first two months of the season, Doolittle was the only reliable arm in a chaotic Washington pen.
Due to being the only arm Manager Dave Martinez could rely on, Doolittle has been extremely overused. Doolittle is the second most used closer in all of baseball with 32 games pitched and is well on his way to breaking his career high 70 appearances that came back in 2013.
Despite overuse, Doolittle has been dominant when he has been on the mound.