Montgomery Biscuits
The Tampa Bay Rays selected Mahtook in the first round, with the 31st overall selection, of the 2011 MLB draft with a compensation pick from the New York Yankees gained when the Yankees signed Rafael Soriano. Before the 2012 season, MLB.com rated Mahtook as the 96th best prospect in baseball. He began the 2012 season with the Charlotte Stone Crabs of the Class A-Advanced Florida State League and was promoted to the Montgomery Biscuits of the Class AA Southern League. He spent the 2013 season with the Montgomery Biscuits.