Barwick-in-Elmet were the perpetrators as they bowled out their visitors for a meagre 13 at Chapel Lane.
It allowed Barwick to start their celebrations by 2pm in a 10-wicket success.
Andrew Styan (6-9) and Dan Fitzpatrick (3-3) went through Hillam’s order in a flash.
Wetherby held the record previously for the lowest total in the top tier when they were bowled out for just 16 against Bardsey in 1985.
Little Ribston A were bowled out for just nine in a Division Six fixture against Long Marston A in 2004, while Kirk Hammerton A folded for 11 in Division Five against Amaranth A in 1981.
Kirk Deighton could seal the Wetherby League crown for a first time this weekend if results go their way following a seven-wicket success over Garforth Parish Church, who were dismissed for a woeful 93 and Deighton’s Jonny Watkins crashed 48 in the leader’s comfortable chase.
Deighton require a win at South Milford and Bilton-in-Ainsty to lose at home to Garforth to seal the Championship.
Bilton dropped a point in beating Church Fenton by five wickets on Saturday after failing to bowl their hosts out.
Steven Parker-Harrison’s half-century guided Fenton to 170-7 and despite spluttering in reply, Bilton made the total with relative comfort through Luke Schumann (45) and Phil Schofield (47).
Scarcroft kept their faint title hopes alive with a 105-run win over South Milford. Shoaib Rehman’s 4-6 bowled Milford out for 65 in reply to 170.
Elsewhere Andy Wood (63) and Richard Brooke (77no) gave Sicklinghall (193-3) a comfortable chase against Shadwell (191) following Dan Holmes’ six wickets.
St Chad’s won a thriller against Old Leodiensians by two wickets after chasing 170.
In Division Two, Rufforth will seal promotion with one point at home to third-placed Headingley after cruising past relegated Garforth A (115-8) by eight wickets.
Headingley (165) thumped Saxton (85) by 80 runs thanks to Matt Williams (52) and Chris Dalby (4-12).