Bryce Harper

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Washington Nationals, from left to right, Jayson Werth, Bryce Harper, Danny Espinosa and Ryan Zimmerman stretch during a spring training baseball workout Tuesday, Feb. 19, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

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Washington Nationals first baseman Adam LaRoche, right, talks with outfielder Bryce Harper, left, during a spring training baseball workout Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

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Washington Nationals outfielder Bryce Harper throws during a spring training baseball workout Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

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Washington Nationals' Bryce Harper waits for a pitch during a spring training baseball workout Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

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Washington Nationals center fielder Bryce Harper (34) hits a solo home run in the bottom of the third inning to put the Washington Nationals up 4-0 over the St. Louis Cardinals in game five of the National League Division Series at Nationals Park, Washington, D.C., Friday, October 12, 2012. (Andrew Harnik/The Washington Times)

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Washington Nationals right fielder Bryce Harper (34) signs autographs for fans before the Washington Nationals play the Houston Astros during spring training at the Osceola County Stadium, Kissimmee, Fla., Saturday, March 3, 2012. (Andrew Harnik/The Washington Times)

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Washington Nationals right fielder Bryce Harper (34) poses for a portrait during photo day at spring training, Viera, Fla., Tuesday, February 28, 2012. (Andrew Harnik/The Washington Times)

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Washington Nationals right fielder Bryce Harper (34) shares a laugh with a teammate as the Washington Nationals plays the Georgetown Hoyas during spring training exhibition game at Space Coast Stadium, Viera, Fla., Friday, March 2, 2012. (Andrew Harnik/The Washington Times)

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Bryce Harper signs autographs before the Washington Nationals take on the Arizona Diamondbacks in Major League Baseball at Nations Ballpark, Washington, D.C., Tuesday, May 1, 2012. (Andrew Harnik/The Washington Times)

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Bryce Harper takes the field as the Washington Nationals take on the Arizona Diamondbacks in Major League Baseball at Nations Ballpark, Washington, D.C., Tuesday, May 1, 2012. (Andrew Harnik/The Washington Times)

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Washington Nationals right fielder Bryce Harper (34) catches a fly ball in left field as the Washington Nationals lose to the Arizona Diamondbacks 5-1 in Major League Baseball at Nations Ballpark, Washington, D.C., Tuesday, May 1, 2012. (Andrew Harnik/The Washington Times)

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Bryce Harper splashes water on his face in between innings during the Nationals game against the Colorado Rockies at Nationals Park, Washington D.C., Sunday, July 8, 2012. Game time temperature at the park was 95 degrees Fahrenheit. (Ryan M.L. Young/The Washington Times)

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Nationals General Manager Executive Vice President of Baseball Operations Mike Rizzo gives a hug to Bryce Harper (34) prior to the game as the Washington Nationals host the Colorado Rockies at Nationals Park in Washington, D.C., Sunday, July 8, 2012. (Rod Lamkey Jr./The Washington Times)

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Bryce Harper slides in to third base in the bottom of the tenth inning during the Washington Nationals game against the New York Mets at Nationals Park, Washington D.C.,Tuesday, July 17, 2012. Harper's triple allowed Jhonatan Solano to score tying the game at 4-4. (Ryan M.L. Young/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) celebrates after scoring the tying run in the eight inning, Wednesday, Sept. 19, 2012, in Washington, DC. Washington Nationals lose to the Los Angeles Dodgers 6 to 7 in the second game of the doubleheader at National Park (Craig Bisacre/The Washington Times)

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Washington Nationals center fielder Bryce Harper (34) rounds second before safely siding into third in the first inning in Game 5 of the National League Division Series between the Washington Nationals and the St. Louis Cardinals at Nationals Park, Thursday, October 11, 2012. (Craig Bisacre/The Washington Times)