MotoGP Immediately after winning his AMA Superbike championship, Hayden was tapped to join not only Honda's MotoGP racing efforts, but what was arguably the premier team in MotoGP racing: Repsol Honda. Hayden also became teammate to the defending series champion Valentino Rossi. Hayden was seemingly unfazed, and in his first year of MotoGP racing (2003), he finished fifth in the championship points standings while riding Honda's RC211V, an achievement that won him the Rookie-of-the-Year award. In 2005, Hayden finished third in the MotoGP championship points standings behind Marco Melandri and series winner Valentino Rossi
Haydenwas charged with spearheading Repsol Honda's championship aspirations for 2006, and was the only rider to be handed the full 2006 Honda bike during pre-season testing. He led the championship from the third race. Capturing the championship was not without peril: in the second to last round at Estoril in Portugal, teammate Dani Pedrosa lost the front-end while trying to pass Hayden. The resulting lowside accident took out both bikes. This left Hayden eight points behind Rossi in the championship with one race left to go. In the last race of the season on October 29, 2006 Rossi crashed on lap 5 trying to make up for a poor start. Hayden won the 2006 title that day by finishing 3rd (9.3s) behind race winner Troy Bayliss and Loris Capirossi.
By the middle of 2008 it was strongly suspected by fans, media, and the MotoGP paddock already, and later supported by Hayden's own admission during a press conference that he would be leaving Honda, that Hayden would be joining the Ducati Marlboro Team to ride alongside Casey Stoner for the 2009 MotoGP season. This was confirmed on 15 September 2008 thus ending his ten year relationship with Honda. Hayden finished the 2009 MotoGP championship in 13th place (out of 18), his worst result in 7 years of racing MotoGP. His championship campaign was marked by remarkable misfortune, being speared off the track on three different occasions, resulting in no point scoring races. On 3 September 2009, it was confirmed that Hayden had signed a one year extension of contract with Ducati for the 2010 MotoGP season, ending speculation of a move away from the team. He will partner Casey Stoner once again at the team.MotoGP Overall
Nicky has won 3 races, finished 2nd in 6 races, and 3rd in 18 races. Throughout his MotoGP career he has earned 5 MotoGP pole positions and has achieved the fastest lap in a MotoGP race 6 times.