Spen league Premier Division leaders Bywell had double cause for celebration after Saturday's round of fixtures.
Goals from Jeff Pygott, Jaz Lonergan and Neil Hinchcliffe gave the pace-setters a comfortable 3-0 home win over Airedale Celtic.
And to add to their joy nearest challengers Salfia Rangers suffered a shock defeat at second-from-bottom Norfolk.
In-form Norfolk striker Lunat did the damage with another hat-trick, Hadji and Kerr replying for a disappointing Rangers.
Two second-half goals from veteran Alan Clegg and one each from Ian Booth and Simon Thompson gave Overthorpe a 4-1 victory over Lord Nelson, Scott Sharpe netting for the visitors.
Jason Hinchcliffe grabbed both Black Horse's goals in a 2-2 draw at Howden Clough, while Tim Douglas' brace helped Barclays to a 3-2 home win over Old Bank.
The mid-table clash between Kalon and Carlinghow Victoria - the only game played in Division One - ended in a 2-2 stalemate.
Chris Flesher netted both Kalon goals, Wayne Pryke and Toriq Mamhood replying for Carlinghow.
The highlight of the first round of group matches in the Supplementary Cup was Jason Goodall's six goals in Commonside's 13-3 drubbing of visitors Scully's.
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