Chang Thailand Senior Masters
O'Sullivan finds form as red-hot Ruangkit shines in Thailand
Boonchu Ruangkit tried kick-boxing as a young man but gave it up after being knocked out cold in his third bout.
Denis O’Sullivan put last week’s poor performance in Brunei behind him to notch six birdies in an opening round of three under par 69 in the Chang Thailand Senior Masters in Nakhonpathom.