Nong-O Sit-Or just won Lumpini Stadium's Fighter of the Year award, which is about as prestigious as they get in the sport. He's had a dominant year, winning 9 fights and losing 1 to Saenchai. Last year, the award came down to a bout between him and Saenchai and Saenchai took the win by KO and the award. Nong-O is extremely talented, one of those rare fighters who's well rounded in nearly all aspects. He's also quite unique in that he's southpaw who fights orthodox and sometimes switches back, in a world of orthodox fighters switching to southpaw. Recently, he's developed quite a punching game on top of his smooth, powerful kicks.
Petchboonchu FA Group is the quintessential power clincher. He's traded the Lumpini 135 lb belt with Saenchai a couple of times and has been in perennial contendership for both the lightweight 135 lb and super-featherweight 130 lb belts along with Sagetdao Petpayatai and Nong-O for the past 2 years or so.
Nong-O won the super-featherweight from Petchboonchu by first round TKO in 2009. This fight is for a charity even co-promoted by Lumpini and Rajadamnern promoters so the belt is not on the line. Petchboonchu does have a chance to redeem himself, however, as Nong-O has beaten him twice before this by TKO.
Nong-O in red, Petchboonchu in blue.