Born February 1978. In 2001, stepped up from World Supersport Championship to the World Superbike (WSB) Championship. In 2003, ranked 2nd (Ducati) in the WSB Championship. Having entered MotoGP in 2004 and achieved a ranking of 11th (Ducati), Xaus joined Yamaha in 2005 and rode a YZR-M1 with teammate Toni Elias, achieving a ranking of 15th. The following year, he left Yamaha and returned to WSB.
|Year||Class||Result & Pole position||Machine|
|2005||MotoGP||16th||PP: 0||1st: 0||2nd: 0||3rd: 0||YZR-M1(0WP4)|
*Results for years with a Yamaha factory team, riding a Yamaha factory machine or ranked 5th or higher riding a Yamaha production racer (World GP, World F750)