Bryce Harper

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Washington Nationals' Bryce Harper, third from left, is helped off the field after being hit while being tagged out at second base during the second inning of the baseball game against the New York Mets on opening day at Citi Field in New York, Monday, March 31, 2014. (AP Photo/Seth Wenig)

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Washington Nationals' Bryce Harper, left, strikes out in an exhibition spring training baseball game against the New York Mets, Thursday, March 27, 2014, in Port St. Lucie, Fla. (AP Photo/David Goldman)

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Washington Nationals' Bryce Harper hits a single in the sixth inning of an exhibition spring training baseball game against the New York Mets, Thursday, March 27, 2014, in Port St. Lucie, Fla. (AP Photo/David Goldman)

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FILE - In this March 5, 2014 file photo, Washington Nationals manager Matt Williams (9) stands in the dugout before a spring exhibition baseball game against the New York Mets, in Viera, Fla. With Bryce Harper and Stephen Strasburg fit after offseason surgery, and a rookie skipper in MattWilliams, the Nationals are hoping they'll live up to expectations this season.(AP Photo/Alex Brandon, File)

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FILe - In this March 4, 2014 file photo,Washington Nationals starting pitcher Stephen Strasburg throws in a spring exhibition baseball game against the Atlanta Braves, in Kissimmee, Fla. With Bryce Harper and Strasburg fit after offseason surgery, and a rookie skipper in MattWilliams, the Nationals are hoping they'll live up to expectations this season. (AP Photo/Alex Brandon, File)

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Bryce Harper

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Washington Nationals' Bryce Harper, bottom, is tagged out at second base by New York Mets' Ruben Tejada on a steal attempt in the sixth inning of an exhibition spring training baseball game, Thursday, March 27, 2014, in Port St. Lucie, Fla. (AP Photo/David Goldman)

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Washington Nationals manager Matt Williams, left, argues with umpire Jeff Gosney after Gosney ejected Bryce Harper in the fourth inning of an exhibition spring training baseball game against the St. Louis Cardinals, Wednesday, March 26, 2014, in Jupiter, Fla. (AP Photo/David Goldman)

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Washington Nationals' Bryce Harper, left, is out at first base as St. Louis Cardinals' Matt Adams, right, catches the throw from teammate Mark Ellis in the fourth inning of an exhibition spring training baseball game, Wednesday, March 26, 2014, in Jupiter, Fla. (AP Photo/David Goldman)

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Washington Nationals' Bryce Harper, left, is held by first base coach Tony Tarasco as he argues with umpire Jeff Gosney, right, after Gosney ejected Harper in the fourth inning of an exhibition spring training baseball game against the St. Louis Cardinals, Wednesday, March 26, 2014, in Jupiter, Fla. (AP Photo/David Goldman)

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Washington Nationals manager Matt Williams, left, argues with umpire Jeff Gosney after Gosney ejected Bryce Harper in the fourth inning of an exhibition spring training baseball game against the St. Louis Cardinals, Wednesday, March 26, 2014, in Jupiter, Fla. (AP Photo/David Goldman)

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Bryce Harper and Ryan Zimmerman of the Washington Nationals take the field during their Grapefruit League game against the Detroit Tigers during Spring Training at Space Coast Stadium in Viera, Florida on March 20, 2014. Photo by Gregg Newton