Tim Young hit the highest league score of the day - 121 - as Great & Little Tew 2nd declared on 288-5 after 48 overs at home to Leighton Buzzard Town 2nd.
Dave Freeman (90) also batted well for Tew, while Tarrun Mistry took 4-59.
Piers Myatt then claimed 5-53, but Town held out for a draw on 203-8.
Great & Little Tew 2nd 16, Leighton Buzzard Town 2nd 8.
Keith Cartwright took 6-22 in an impressive 14.4 over spell as Brackley dismissed Didcot for 94 after asking their hosts to bat first.
Eric Carpenter then hit a steady 43 and Michael Cartwright an unbeaten 34 as Brackley eased to a seven-wicket success.
Nine Oxford & Bletchingdon Nondescripts 2nd batsmen were clean bowled as they subsided to 86 all out at home to Banbury 3rd.
The wickets were shared between Liam Manley (4-24), Sean Cranley (3-34) and Iain Woodworth (3-22).
Earlier, Banbury had been bowled out for 230, of which Ian Adams scored 79 and Alistair Jarvis 46.
Oxford & Bletch Nondescripts 5, Banbury 3rd 25.
There was a tight finish at Bicester and North Oxford 2nd, where the home side prevailed over Abingdon Vale 2nd by seven runs.
Michael Simpson hit 57 in Bicester's 153, then David Clark took 3-25 as Vale fell just short.
Bicester & North Oxford 2nd 25, Abingdon Vale 2nd 7.
Aston Rowant 2nd won by 26 runs at Great Brickhill despite being bowled out for just 134.
Tim Hulse top-scored with 43 for Rowant, while Nick Tweek grabbed 5-26 for the home side, who never got going in reply and were bowled out for 108.
Great Brickhill 6, Aston Rowant 2nd 25.
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