Chinnor crushed struggling St Ives 77-0 with an 11-try demolition at Kingsey Road in South West 1.
Wing Pip Seymour led the way with a hat-trick, while fly half James Cathcart scored two in a 32-point haul.
Chinnor, for whom Seymour, centre Richard Williams and prop Joe Winpenny shone, showed excellent handling skills in the wet and windy conditions.
They took the lead with two Cathcart penalties.
Flanker Andrew McGuire bagged the first try from a rolling maul, Cathcart converting and adding a third penalty.
Seymour, fellow wing Jaike Carter and captain Matt Hutchings all went over before the break with Cathcart converting two and another penalty.
Turning round into the wind, Chinnor lost Hutchings to a leg injury, but scored again through Seymour.
Tries then came at regular intervals with Carter, Seymour and centre Trevor Powell on target.
Cathcart notched his own try double to go with two more conversions, while replacement Tristan Corpe completed the rout.
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