Herewini who is well known not only for his exploits on the BDO circuit in Australia and New Zealand but also impressing on the World Series in the past defeated former BDO World Trophy champion Peter Machin (Australia) in the final.
It was only decided by a final leg and the New Zealand ace saw off Martijn Kleermaker in the semi-finals and Chris Landman in the last 16.
In the ladies, Suzuki saw off Deta Hedman in a 7-3 win to go with her World Cup pairs victory on Friday.
Men's
Quarter-Finals
Peter Machin 5-3 Johan Engström
Nick Kenny 5-3 Andreas Harrysson
Martijn Tailor 5-3 Jeff Smith
Darren Herewini 5-3 Mitchell Clegg
Semi-Finals
Peter Machin 6-3 Nick Kenny
Darren Herewini 6-5 Martijn Kleermaker
Final
Darren Herewini 7-6 Peter Machin
Ladies
Quarter-Finals
Vicky Plum 5-4 Chris Savvery
Mikuru Suzuki 5-2 Maud Jansson
Tori Kewish 5-3 Cathy Leung
Deta Hedman 5-1 Mayumi Ouchi
Semi-Finals
Mikuru Suzuki 6-0 Vicky Plum
Deta Hedman 6-2 Tori Kewish
Final
Mikuru Suzuki 7-3 Deta Hedman
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