Wallingford stayed on course for promotion by overcoming Oxford & Bletchingdon Nondescripts 2nd by eight wickets.
Nondies made 190, with Chris Day (48) and Pablo Mukherjee (43) to the fore.
But Mark Bowman (68) and Lee Ainsworth (48) put on 102 for the first wicket and Darren Grist (52no) did the rest.
Ox & Bletch 5pts, Wallingford 25.
Abingdon Vale 2nd closed the gap on Nondies at the foot of the table despite losing at Great & Little Tew 2nd. Vale made 193-6 after choosing to bat, Chris Butcher finishing 77 not out.
Evergreen seamer Robin Newman then bowled throughout to finish with 5-71, but his efforts were in vain as Tew scrambled to 194-8, Thomas Maxwell hitting 55.
Gt & Lit Tew 25, Abingdon 2nd 12.
Challow & Childrey 2nd are now only two points ahead of Abingdon and Nondies after they crumpled to 112 all out and a 113-run loss at Leighton Buzzard 2nd.
Rameez Dar did the damage for Town, taking 5-35 to follow up the 57 runs he had scored in the home side's 215-9.
L Buzzard 2nd 25, Challow 2nd 5.
David Weston (5-43) and Nick Babington (4-24) helped Chearsley to dismiss Banbury 3rd for 161, Julian Briggs top-scoring for the visitors with 52.
Neil Davies then hit 57 as the hosts had little trouble reaching 163-4 in reply.
Chearsley 25, Banbury 3rd 7.
Richard Simpson took 5-45 as Bicester & North Oxford 2nd bowled out Bledlow Ridge 2nd for 135 to win by 90 runs.
Earlier, Nick Moorman (65) led the way in Bicester’s total of 225-8.
Bledlow R 2nd 25, Bicester & NO 2nd 25.
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