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Closer report: How Kelvin Herrera trade alters bullpens for Nationals, Royals

Two-time All-Star Kelvin Herrera heads to Washington after over 11 years in the Royals organization. AP Photo/Ben Margot

Washington Nationals left-hander Sean Doolittle enters Tuesday as fantasy's No. 3 closer on the Player Rater, with 18 saves, a minuscule ERA and WHIP, and ridiculous strikeout-to-walk rate. He is not losing the ninth-inning role to anyone this week, let alone former Kansas City Royals right-hander Kelvin Herrera, acquired Monday night for three rather ordinary prospects.