Lining up against the likes of Buddy Be Cool, Egotistical, Mosquito Squad and Flying Annie, Oh So Smooth was unwanted by punters at $14.20 but belied the odds with an all-the-way triumph.
He jumped straight to the lead from box four and held that position throughout the race.
He withstood a late challenge from Egotistical in the closing stages and held on to score by a neck in 22.50 to record his 16th career win.
In other races, a brilliant start from Timmy Fields carried that greyhound to an impressive victory in the Silver Sands Resort Bridge Stake (405m).
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READ NOWTimmy Fields exploded from the yellow box and shot away to a convincing lead before crossing the line five lengths ahead of veteran chaser Black Mandagery in a time of 22.83.
The Kevin Foxton-trained race dog has now saluted in six of 23 starts.