 He spent his first five professional seasons in the minor leagues, playing for the Arizona League Mariners, Wisconsin Timber Rattlers, Inland Empire 66ers, San Antonio Missions, and Tacoma Rainiers, before being called up in September .In 2007, Balentien was selected to the All-Star Futures Game in San Francisco, a result of his .328 batting average, 20 home runs, and 66 runs batted in by that point.He was called up to the Mariners on September 4, 2007, and played that very night against the New York Yankees at Yankee Stadium.