sentences:  At the beginning of the 2010/11 World Cup, Schlierenzauer suffered an injury and missed the first two events of the Four Hills Tournament.Even though he was recovering from injury, he managed to take two victories at the Vikersund ski flying hill and, later in the season, won three gold medals at FIS Nordic World Ski Championships at Holmenkollen in Oslo.He also set a new Personal Best at a competition in Vikersund by jumping 243.5 meters.