Complex sentence: He began his career at Relax in 2004 before moving to ProTour team Euskaltel-Euskadi in 2006, and then to Karpin-Galicia in 2008.
Split into simpler sentences: He began his career at Relax in 2004 before moving to UCI ProTeam Euskaltel-Euskadi in 2006. Mayoz moved to Karpin-Galicia in 2008.