Round one of the Porsche Infineon Carrera Cup Asia 2005 will roar into action this weekend at the Sepang circuit in Kuala Lumpur as the region's best drivers begin an arduous campaign over 11 rounds of high-octane action. Since its launch in 2003, the series has gone from strength to strength and the 2005 season will see the most competitive field ever as some of the best drivers from Asia and Europe line up for the season opener that acts as one of the support races for the Malaysian Formula One Grand Prix. The field, all driving identical Porsche 911 GT3 Cup racing machines, features many of the drivers who have helped establish the series as arguably the most exciting in Asia. This includes Hong Kong-based Briton and defending champion Matthew Marsh, who will be looking for back-to-back titles with his dynamic A-Ha Racing team. Marsh took the title last season by just three points from veteran Charoensukhawatana Nattavude, but the Thai will be back for another crack, racing with a brand new outfit, SCC Racing Team. Embarking on his second season will be Malaysian hero and former Formula Three racer Rizal Ramli with the Jaseri Racing Team. Fourth on the leaderboard at the end of 2004, Ramli demonstrated his spectacular racing style as well as steely determination throughout last season. Also lining up on the grid again will be popular Sri Lankan driver Dilantha Malagamuwa, this year with A1 Racing, as will 2003 championship runner up Nigel Albon, who returns after a one-year absence, this time with Eurokars Racing. On top form going into the new season are Hong Kong's Darryl O'Young and Team Jebsen. O'Young's memorable performance in the closing round at Macau last year left a real impression, and his podium finishes in New Zealand over the winter confirm the young star is on the rise. Reigning British GT champion Jonathan Cocker will be one to watch as he launches his assault on Asia. Competing this season with GruppeM Racing, the 18-year-old won his only outing in the series last year in Shanghai, but the talented teenager knows he will have his work cut out adapting to a combination of new circuit and the unforgiving heat of Malaysia. Round one of the series will be over 10 laps of the 5.6km circuit tomorrow.