 In 2005, Sanderson broke his own single-season assists record with 71, and helped the Rock win their fifth NLL Championship.During the 2008 season, Sanderson was traded to the Calgary Roughnecks for Lewis Ratcliff.Calgary became the third team (after Albany and Toronto) where Sanderson played for his father, who was an assistant coach for the Roughnecks until the end of the 2009 NLL season.