Thai No 1 Luksika Kumkhum put up a gutsy fight as she came from behind to upset former world No 13 and eighth seed Kirsten Flipkens of Belgium 5-7 7-5 6-4 in the first round of the US$125,000 EA Hua Hin Championship Presented by Singha Corporation at the

Luksika Kumkhum's campaign in the US Open ended early yesterday when she was shown the exit by American teenager Victoria Duval in the first qualifying round.