Singapore's Lam Zhiqun and Pavit Tangkamolprasert of Thailand shared the halfway lead after posting two-under 70s at the Asian Development Tour's (ADT) PGM CCM Rahman Putra Championship yesterday.
The leading duo, who totalled six-under 138s, battled under hazy conditions at the Kelab Rahman Putra Malaysia to hold a one-shot lead at the RM200,000 ($77,200) event.
Local hope Khor Kheng Hwai, Japan's Konosuke Nakazato, Australian Daniel Bringolf and overnight leader, Paul Harris of the United States, stayed one shot back in joint-third place on 139, reported asiantour.com.
Lam, who mixed his card with four birdies and two bogeys, enjoyed a successful amateur career, emerging as the top amateur with a tied-eighth finish at the Asian Tour's ISPS Handa Singapore Classic back in 2011.
"I played pretty consistently today. Managed to grind it out in the haze. I had a solid round yesterday though I didn't finish well. I'm glad to be in the mix for the next two rounds," said the 25-year-old, who was joint-second on Wednesday with a 68.
"I've got country exemptions on the Asian Tour this year but I'll try to play on the ADT whenever I can. I think it's a good platform for me to practise and sharpen my skills," added Lam, who was a junior international swimmer for Singapore before quitting and taking up golf at the age of 12.
Meanwhile, Pavit stayed on course for a second win on the ADT after trading six birdies against four bogeys. He claimed his first victory at the 2013 season-ending event in Jakarta earlier in January.
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