 For 2010 he returned to the Grand Prix scene in the newly formed Moto2 category.Nieto announced his retirement from competition in early 2011 after failing to recover from injuries suffered when racing at Indianapolis in 2010.He won the Spanish 125cc championship in 1998, and the Spanish 250cc champion in 1999 and 2000, also winning the less prestigious European 125cc title in 1997.