During Haas' first professional season, he struggled with severe saddle sores. Following Jonathan Tiernan-Locke's doping ban, Haas was retroactively awarded the 2012 Tour of Britain title; he originally finished second to Tiernan-Locke. During the 2013 season, Haas finished sixth overall at the Tour de Langkawi, and competed in his first Grand Tour, the Giro d'Italia. While riding the 2014 Tour Down Under, Haas garnered his first UCI World Tour point, before finishing the race fifth overall.
