Washington Nationals

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Washington Nationals' Yunel Escobar (5) reaches to shake hands with manager Matt Williams after Escobar's solo home run during the first inning of a baseball game against the Philadelphia Phillies at Nationals Park, Thursday, April 16, 2015, in Washington. (AP Photo/Alex Brandon)

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Washington Nationals relief pitcher Craig Stammen (35) pauses in the dugout before a baseball game against the Atlanta Braves at Nationals Park, Tuesday, Sept. 9, 2014, in Washington. (AP Photo/Alex Brandon)

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Washington Nationals' Ryan Zimmerman, right, is congratulated by teammate Jayson Werth after they both scored on a three-run double by Wilson Ramos against the Boston Red Sox during the third inning of a baseball game at Fenway Park in Boston, Wednesday, April 15, 2015. (AP Photo/Charles Krupa)

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Washington Nationals starting pitcher Stephen Strasburg delivers to the Boston Red Sox in the first inning of a baseball game at Fenway Park in Boston, Tuesday, April 14, 2015. (AP Photo/Elise Amendola)

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Washington Nationals third baseman Yunel Escobar (5) stands ready during the first inning of a baseball game against the New York Mets at Nationals Park, Wednesday, April 8, 2015, in Washington. (AP Photo/Alex Brandon)

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Washington Nationals right fielder Jayson Werth (28) reacts as he scores during the first inning of a baseball game against the Atlanta Braves at Nationals Park, Tuesday, Sept. 9, 2014, in Washington. (AP Photo/Alex Brandon)

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Washington Nationals right fielder Bryce Harper catches a fly ball, hit by Philadelphia Phillies' Jeff Francoeur, in the fourth inning of a baseball game Sunday, April 12, 2015, in Philadelphia. (AP Photo/Michael Perez)

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Washington Nationals second baseman Danny Espinosa (8) bats against the New York Yankees in an exhibition spring training baseball game Monday, March 23, 2015, in Viera , Fla. (AP Photo/John Bazemore)

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Washington Nationals' Wilson Ramos rounds third base after hitting a home run and celebrates with third base coach Bob Henley in the fourth inning of a baseball game against the Philadelphia Phillies, Saturday, April 11, 2015, in Philadelphia. (AP Photo/Michael Perez)

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Washington Nationals' Jayson Werth warms up with teammates during a spring training baseball workout, Sunday, March 1, 2015, in Viera, Fla. (AP Photo/David Goldman)

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Washington Nationals shortstop Ian Desmond (20) bobbles a ball but gets the out on New York Mets' Daniel Murphy during the ninth inning of a baseball game at Nationals Park, Wednesday, April 8, 2015, in Washington. The Nationals won 2-1. (AP Photo/Alex Brandon)

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Washington Nationals starting pitcher Tanner Roark (57) throws during the eighth inning of a baseball game against the New York Mets at Nationals Park, Thursday, April 9, 2015, in Washington. The Mets won 6-3. (AP Photo/Alex Brandon)

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Washington Nationals relief pitcher Blake Treinen (64) reacts after the last out during the eighth inning of a baseball game against the New York Mets at Nationals Park, Wednesday, April 8, 2015, in Washington. The Nationals won 2-1. (AP Photo/Alex Brandon)

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Washington Nationals shortstop Ian Desmond, center, sits in the dugout in the eighth inning during a baseball game between the Washington Nationals and the New York Mets on opening day at at Nationals Park, Monday, April 6, 2015, in Washington. The Mets defeated the Nationals 3-1. (AP Photo/Andrew Harnik)

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Washington Nationals right fielder Michael Taylor singles in the first inning during a baseball game between the Washington Nationals and the New York Mets on opening day at at Nationals Park, Monday, April 6, 2015, in Washington. (AP Photo/Andrew Harnik)

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Washington Nationals starting pitcher Max Scherzer works in the first inning of an exhibition spring training baseball game against the Miami Marlins, Tuesday, March 10, 2015, in Jupiter, Fla. (AP Photo/John Bazemore)

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Washington Nationals' Clint Robinson, left, and bullpen catcher Sam Palace walk to the batting cages during an informal spring training baseball workout, Thursday, Feb. 19, 2015, in Viera, Fla. (AP Photo/David Goldman)

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A fan holds up a sign before the Washington Nationals home opener against the Arizona Diamondbacks Thursday, April 14, 2005, in Washington. (AP Photo/Susan Walsh)

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Washington Nationals starting pitcher Livan Hernandez throws the first pitch during opening day against the Arizona Diamondbacks at RFK Stadium Thursday, April 14, 2005 in Washington. Tonight's game is the first regular-season baseball game in the nation's capital in 34 years. (AP Photo/Pablo Martinez Monsivais)

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Washington Nationals left fielder Kevin Frandsen (19) gets ready to bat in an exhibition spring training baseball game against the Miami Marlins Tuesday, March 10, 2015, in Jupiter, Fla. (AP Photo/John Bazemore)