Ali McKenna struck eight goals as Kirkley & Pakefield went on a scoring spree against a weakened Leiston side.
The visitors, 24 hours after going out of the FA Cup at Dartford, were no match for a rampant Royals side as they slumped to a 16-1 defeat.
McKenna opened the scoring in the first minute and had completed his hat-trick by the 25 minute mark. Lesiton pulled one back to make it 5-1 at half-time, but the hosts crashed in 11 goals after the break.
Other goals for the Royals came from Ryan de Coteau (2), Alex Holmes, an Aaron Smith own goal, Scott Manning, Bodie Carter, Ryan Crisp and an Ian Dawson penalty.
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