Bryce Harper

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Washington Nationals outfielders Denard Span, left, and Bryce Harper run to the dugout during the fourth inning of an exhibition spring training baseball game against the Houston Astros on Thursday, March 14, 2013, in Viera, Fla. (AP Photo/Evan Vucci)

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Washington Nationals outfielder Jayson Werth (28) and Bryce Harper, right, wait to take batting practice at spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

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Washington Nationals center fielder Bryce Harper (34) hits as the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) runs to first as the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) hits as the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) hits as the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) puts his hat on as he takes the field as the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) takes the field as the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) walks back to the dugout as the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) swings as the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) signs autographs before the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) signs autographs before the Washington Nationals play the Florida Marlins during spring training at Space Coast Stadium, Viera, Fla., Wednesday, February 27, 2013. (Andrew Harnik/The Washington Times)

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Washington Nationals outfielder Bryce Harper, left, signs autographs for fans before an exhibition spring training baseball game against the Miami Marlins Wednesday, Feb. 27, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

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Washington Nationals center fielder Bryce Harper (34) comes into the dugout as the Washington Nationals play the Atlanta Braves during spring training at Champion Stadium, Kissimmee, Fla., Tuesday, February 26, 2013. (Andrew Harnik/The Washington Times)