Career
At the FIS Nordic World Ski Championships 2009 in Liberec, Gruber finished fifth in the 4 x 5 km team, 11th in both the 10 km individual large hill and individual normal hill events, and 22nd in the 10 km mass start event. He has five World Cup victories in his career. His first wins came in 2008.
One of these wins that year was in the 15 km individual event at the Holmenkollen ski festival in Oslo.