The AMA Superbike Championship presented by Parts Unlimited will contest the first of two rounds to be held this season at the famed Mazda Raceway Laguna Seca circuit in Monterey, Calif. The July stop has also become an annual meeting with the superstars of the MotoGP World Championship, widely considered the pinnacle of global motorcycle road racing. The MotoGP field boasts some of the AMA Superbike Championship's most decorated graduates, led by 2006 World Champion Nicky Hayden, a former AMA Superbike and Supersport champ. Hayden won the U.S. Grand Prix in 2005 and 2006. 1992 AMA 250GP champion Colin Edwards is another top MotoGP competitor with an AMA Superbike pedigree. The Texan has been performing impressively this season, regularly finishing in the top five and occasionally landing on the podium. Unfortunately, former AMA Formula Xtreme and Superstock king John Hopkins will be unable to compete in front of his home fans at Laguna Seca, ruled out by injury.