Claim: Giancarlo Stanton is in a league.

Giancarlo Cruz Michael Stanton -LRB- born November 8 , 1989 -RRB- is an American professional baseball left fielder and right fielder for the Miami Marlins of Major League Baseball -LRB- MLB -RRB- . Prior to 2012 , he was known as Mike Stanton .   Stanton graduated from Notre Dame High School , before he was selected by the Marlins in the 2007 MLB draft . Stanton made his MLB debut with the Marlins in June 2010 . He is a three-time MLB All-Star and was the Hank Aaron Award winner for the National League in 2014 after leading the league in home runs . In November 2014 , the Marlins signed Stanton to the richest contract in sports history , worth $ 325 million over 13 years .