Aussie Mitchell Brown has started the Bangkok Airways Open in solid fashion with a four-under-par round of 67. Brown is in a tie for fourth position and trails early tournament equal leaders Thaworn Wiratchant, Antonio Lascuna and Yoshinobu Tsukada (five-under) by a stroke after all three carded rounds of 66. Brown&aposs compatriot Marcus Both is in equal 20th spot on one-under after he recorded a round of 70 on the first day while David Gleeson and Neven Basic are a stroke further back on 71 in a share of 27th spot. Local favourite Wiratchant started on the back nine and was leading on five-under after 15 holes but he was stopped in his tracks due to a lightning suspension. When play resumed, the Thai star had a mixed bag parring the 16th, bogeying the 17th and birdying the 18th to finish the round equal leader. Australians who find themselves in the middle of the road after day one are Gavin Flint, Peter Cooke and Andrew Dodt (72). Bangkok Airways Open first round results, Koh Samui -5: Thaworn Wiratchant 66, Antonio Lascuna 66, Yoshinobu Tsukada 66 -4: Lin Wen-hong 67, Wisut Artjanawat 67, Lin Wen-tang 67, Udorn Duangdecha 67, Mitchell Brown (Australia) 67 -3: Varut Chomchalam 68, Juvic Pagunsan 68 -2: Kunihiro Kami 69, Shintaro Kai 69, Prayad Marksaeng 69, Ben Leong 69, Rashid Ismail 69, Mars Pucay 69, Lien Lu-sen 69, Anirban Lahiri 69, Lin Chien-bing 69 Also: -1: Marcus Both (Australia) 70 Ev: David Gleeson (Australia) 71, Neven Basic 71 +1: Gavin Flint (Australia) 72, Peter Cooke (Australia) 72, Andrew Dodt 72 +2: Richard Gallichan (Australia) 73, Rich Kulacz (Australia) 73