Alex Rodriguez plays a sport.
Alex Rodriguez . He became the youngest player ever to hit 500 home runs , reaching the milestone in 2007 . The American League of Professional Baseball Clubs , or simply the American League ( AL ) , is one of two leagues that make up Major League Baseball ( MLB ) in the United States and Canada . Major League Baseball ( MLB ) is a professional baseball organization , the oldest of the four major professional sports leagues in the United States and Canada . The Major League Baseball Most Valuable Player Award ( MVP ) is an annual Major League Baseball ( MLB ) award , given to one outstanding player in the American League and one in the National League . A third baseman , abbreviated 3B , is the player in baseball whose responsibility is to defend the area nearest to third base -- the third of four bases a baserunner must touch in succession to score a run .