Tim Wilford (89) and Russell Hayes (79no) rescued Division 5 leaders Shipton-under-Wychwood 2nd from 26-4 on their way to 235-5 and a five-wicket win over Bourton Vale 2nd. Craig Lambert (43no) joined Hayes to finish off the job.
Earlier Gareth Rowley had hit 115 and Martyn Hayward 55 in Vale's 234-7.
Shipton 2nd 30pts, Bourton Vale 2nd 15.
The title will be decided on Saturday when Shipton travel to second-placed Banbury Twenty 2nd, who enjoyed a comfortable win at Thame Town 2nd.
Azhar Shah took 5-54 as Town were restricted to 153-9 from their 50 overs, before former Bicester Town manager Barry Grant hit 59 to see Twenty to 156-4 with 17.4 overs to spare.
Thame Town 2nd 10, Banbury XX 2nd 30.
Stanton St John Willows will finish bottom after suffering their 11th defeat, the latest at Leighton Buzzard Town 2nd.
Rameez Dar hit a seven, five sixes and ten fours in a 55-ball 91 as Town were bowled out for 231.
Reewan Rana took 4-67 for Willows, who then fell 99 runs short as Dar took 5-54.
L Buzzard 2nd 30, Stanton St J 15.
Johannes Claassen took 5-39 and top-scored with 32, but still ended on the losing side as Oxford 3rd crashed to 95 all out at home to Aston Rowant 2nd.
Peter Roberts (6-28) did the damage for Rowant, who earlier had struggled to 136 all out.
Oxford 3rd 13, A Rowant 2nd 30.
Oxford & Bletchingdon Nondescripts 2nd scraped a two-wicket win at Banbury 3rd. The home side were bowled out for 171, before Nondies scraped their way to 172-8 despite Ross Freeman's 4-55.
Banbury 3rd 15, Oxford & Bletch 2nd 30.
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