Fresh from winning his record 15th Asian Tour title in India on Sunday, the 45-year-old Thai is now focusing on the field of 48 players in the US$6.1 million PGA Tour event at the Mines Resort and Golf Club in Kuala Lumpur.
"It would be nice to be in the top five," said Thaworn who finished tied 30th in the first edition of the tournament in 2010. "The rough is not too long like it was and many trees were cut down."
Thaworn, the current Asian Tour money leader following the India win, admitted it is not likely that he will win the tournament which features several fine players including Tiger Woods.
"You must play well to win because of the quality of the field," he said.
Thaworn is expected to be crowned the Asian Tour's No.1 for a second time after his success in 2005 having won three tournaments this year.
Although the CIMB Classic and next week's WGC HSBC Champions in China are sanctioned by the Asian Tour, earnings from the two events are not counted in Asia's Order of Merit race.
Thaworn has five remaining tournaments on the Asian Tour _ the Singapore Open, Hong Kong Open, King's Cup in Thailand, Thailand Golf Championship and Johor Open.
Prom Meesawat, who is making his debut at the CIMB event, said he would be happy if he finishes in the top 30.
"A lot of good players are in the tournament," he said. "I will go out and enjoy playing golf."
Today, Prom will play with Scott Piercy while Thaworn is grouped with defending champion Bo Van Pelt.
In Japan, Kiradech Aphibarnrat will play in his first tournament in almost two months at this week's Mynavi ABC Championship after recovering from hyperthyroidism.