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Drew Stubbs #13 of the Colorado Rockies watches the Ian Desmond #20 (not pictured) of the Washington Nationals ruled home run to give the Nationals the lead in the seventh during a baseball on July 2, 2014 at Nationals Park in Washington, DC. The Nationals won 4-3. (Photo by Mitchell Layton/Getty Images) ( 451625960 )

Washington Nationals left fielder Bryce Harper lunges to catch a ball hit by Colorado Rockies' Charlie Blackmon during the seventh inning of a baseball game at Nationals Park, Wednesday, July 2, 2014, in Washington. The Nationals won 4-3, and swept the three-game series with the Rockies. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

Michael McKenry #8 of the Colorado Rockies celebrates a three run home run in the second inning during a baseball against the Washington Nationals on July 2, 2014 at Nationals Park in Washington, DC. (Photo by Mitchell Layton/Getty Images) ( 451623508 )

Troy Tulowitzki #2 of the Colorado Rockies forces out Ryan Zimmerman #11 of the Washington Nationals at second base in the second inning during a baseball on July 2, 2014 at Nationals Park in Washington, DC. (Photo by Mitchell Layton/Getty Images) ( 451623500 )

Tyler Matzek #46 of the Colorado Rockies pitches in the first inning during a baseball against the Washington Nationals on July 2, 2014 at Nationals Park in Washington, DC. (Photo by Mitchell Layton/Getty Images) ( 451623496 )

Washington Nationals starting pitcher Doug Fister (58) talks with catcher Jose Lobaton as they walk to the dugout during the fifth inning of a baseball game against the Colorado Rockies at Nationals Park, Wednesday, July 2, 2014, in Washington. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

Washington Nationals shortstop Ian Desmond (20) stands on third base with third base coach Bob Henley (14), as they wait for the umpires to review a ball hit by Desmond during the seventh inning of a baseball game against the Colorado Rockies at Nationals Park, Wednesday, July 2, 2014, in Washington. Desmond's hit was ruled a home run. The Nationals won 4-3, and swept the three-game series with the Rockies. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

Michael McKenry #8 of the Colorado Rockies runs the bases after hitting a three run home run in the second inning during a baseball against the Washington Nationals on July 2, 2014 at Nationals Park in Washington, DC. The Nationals won 4-3. (Photo by Mitchell Layton/Getty Images) ( 451626852 )

Ian Desmond #20 of the Washington Nationals runs to third base and later ruled home run in the seventh inning, to give the Nationals the lead, during a baseball against the Colorado Rockies on July 2, 2014 at Nationals Park in Washington, DC. (Photo by Mitchell Layton/Getty Images) ( 451625950 )

Colorado Rockies starting pitcher Tyler Matzek wipes his face after being relieved during the seventh inning of a baseball game against the Washington Nationals at Nationals Park, Wednesday, July 2, 2014, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

Michael McKenry #8 of the Colorado Rockies tags Bryce Harper #34 of the Washington Nationals after a strike out in the sixth inning during a baseball on July 2, 2014 at Nationals Park in Washington, DC. (Photo by Mitchell Layton/Getty Images) ( 451626840 )

Washington Nationals starting pitcher Doug Fister throws during the first inning of a baseball game against the Colorado Rockies at Nationals Park, Wednesday, July 2, 2014, in Washington. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

Colorado Rockies' Troy Tulowitzki (2) talks with home plate umpire Rob Drake after striking out during the eighth inning of a baseball game against the Washington Nationals at Nationals Park, Wednesday, July 2, 2014, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

Washington Nationals' Ian Desmond (20) celebrates his solo home run with teammates during the seventh inning of a baseball game against the Colorado Rockies at Nationals Park, Wednesday, July 2, 2014, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

The Washington Nationals mascot Screech celebrates a win after a baseball against the Colorado Rockies on July 2, 2014 at Nationals Park in Washington, DC. The Nationals won 4-3. (Photo by Mitchell Layton/Getty Images) ( 451626332 )

Colorado Rockies relief pitcher Matt Belisle throws during the seventh inning of a baseball game against the Washington Nationals at Nationals Park, Wednesday, July 2, 2014, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

Washington Nationals relief pitcher Rafael Soriano celebrates after the last out of a baseball game against the Colorado Rockies at Nationals Park, Wednesday, July 2, 2014, in Washington. The Nationals won 4-3, and swept the three-game series with the Rockies. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

Washington Nationals' Jayson Werth (28) celebrates with Scott Hairston (7) and others after a baseball game against the Colorado Rockies at Nationals Park, Wednesday, July 2, 2014, in Washington. The Nationals won 4-3, and swept the three-game series with the Rockies. (AP Photo/Alex Brandon) ( Rockies Nationals Baseball )

WASHINGTON, DC - JULY 2: The Nationals scoreboard explains the game is delayed due to severe weather before a baseball between the Colorado Rockies and the Washington Nationals on July 2, 2014 at Nationals Park in Washington, DC. (Photo by Mitchell Layton/Getty Images) ( 451623078 )