Giancarlo Stanton

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Miami Marlins' Garrett Jones, left, is congratulated by teammate Giancarlo Stanton after hitting a two-run home run during the first inning of an exhibition spring training baseball game against the St. Louis Cardinals Friday, Feb. 28, 2014, in Jupiter, Fla. (AP Photo/Jeff Roberson)

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Miami Marlins' Giancarlo Stanton swings in the batting cage during spring training baseball practice Thursday, Feb. 20, 2014, in Jupiter, Fla. (AP Photo/Jeff Roberson)

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Miami Marlins' Giancarlo Stanton pauses after running sprints with his teammates during spring training baseball practice, Thursday, Feb. 20, 2014, in Jupiter, Fla. (AP Photo/Jeff Roberson)

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Miami Marlins' Giancarlo Stanton takes batting practice during baseball spring training Thursday, Feb. 20, 2014, in Jupiter, Fla. (AP Photo/Jeff Roberson)

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Miami Marlins right fielder Giancarlo Stanton talks to the media at the Marlins Winter Warm-Up on Saturday, Feb. 15, 2014, in Miami, Fla. (AP Photo/El Nuevo Herald, David Santiago)

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Nationals rookie Bryce Harper was named to the National League All-Star team, replacing Marlins outfielder Giancarlo Stanton, who will be sidelined after undergoing knee surgery. (AP Photo/Nick Wass)