Clayton went 5-4 up with a vital break but 'The Black Cobra' broke back immediately before pinning D9 to make sure that he didn't suffer another final defeat on the Pro Tour.
De Zwaan will be ecstatic but for Clayton he will think that it is a missed opportunity to claim a 3rd PDC title after claiming a Euro Tour this time last weekend.
This win could open huge doors for de Zwaan including the World Matchplay and World Grand Prix; potentially being a career defining moment for the Dutchman.
Click here for more information about the Pro Tour and the prize fund breakdown.
https://twitter.com/OfficialPDC/status/990631443272478720