Fieldside boosted their hopes of a top-two finish in the Builldbase Oxford & District Premier Division as they crushed third-placed Riley B 5-1.
Karl Walker got them off to a flier when he beat Malcolm Bough 63-46, 85-23.
Paul Robinson then accounted for Dean Campbell, 70-20, 65-24, before Bob Chivers made it 5-0 with a 70-39 in the fifth frame.
Dave Bough replied 60-38 in the final frame to prevent the whitewash.
Oracle A are also in with a shout of finishing runners-up in Division 1, despite crashing to a 4-2 defeat against Riley A.
Tony Hicks and Gary Cowlin gave Riley a 4-0 lead, Hick beating Mike Russell 57-37, 62-21, including a 34 break.
Cowlin hit a 40 break as he swamped Ben Dudman 67-4, before winning the second 72-22.
Nigel Barker claimed the last two frames for Oracle when he beat John Butcher 65-45, 58-32.
Ashton A took over at the top of Division 2 for the first time this season after a 5-1 victory against basement boys House Club B.
Pete Fenn saw off Mike Augar 73-31, 59-28, before Keith Philpott got the better of Alan King 65-56 in the third frame to give House Club some hope.
However, King replied to win the fourth frame 50-25, before Terry Chambers clinched the match 65-51, 63-33 against Paul Larkins.
Riley E moved back to the top of Division 3, but only by a point after they were held to a draw by lowly Cowley Con B.
Art Tangsakul gave Riley's the lead with a 50-22 victory in the opener, but Neil Kirby won the next 46-44 on the black to make it 1-1.
Brian Mabbutt then defeated David Lo 44-41 in another tight finish to give Cowley the lead, only for Lo to win the fourth 55-23 to level again.
The final two frames between Ken Olive and Kelvin Cheng were also tight, Olive winning the fifth 39-35, while Cheng took the last frame 46-34.
Littlemore RBL A crushed Cowley Con D 5-1.
Darren Murray and Pete Truby shared the opening frames, Murray winning the first 50-23 and Truby the next 50-42.
Simon Painter was unlucky against Mal McAllister, who scraped home in both frames on the black 56-47, 57-55.
Lee McAllister completed Littlemore's win with victory against Brian Green.
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