Michael Thomas took 6-62 in a marathon 22-over spell as Banbury Twenty overcame Great & Little Tew by 50 runs.
Twenty had made 197-7 from their 52 overs after being put into bat, Robert Hastings top-scoring with 61.
None of the Tew batsmen could get going against seamerThomas, although Ben Millard was left stranded on 28 not out as his side were dismissed in 46 overs for 147.
Gt & Little Tew 6pts, Banbury XX 25.
A defiant tenth-wicket partnership of 30 between Horspath's final pair Dean Creed and Lee Mason denied Aston Rowant their third win in a row.
Put into bat, Rowant declared after 48 overs on 263-4, opener Alex Jewell leading the way with 113 not out.
He received valuable support from Chris Watling (57) and Chris Eaton (55).
The home side were soon in trouble, but Chris Penner led the fightback with 69, and, despite racing through 59 overs, Rowant could not quite force the win.
Horspath 7, Aston Rowant 17.
A high-scoring match between Oxford Downs and Shipton-under-Wychwood ended in a draw.
Shipton's Sahan Wijeratne hit 70 and Jon Hartley 51 not out as the visitors racked up 253-6 from their 52 overs, 35 runs coming from the last two.
Mark Milligan took 3-55 for Downs and then hit 57 as the hosts went for the runs, but despite Richard West's 61 and Wes Bartlett's 51 not out they managed only 242-6.
Oxford Downs 9, Shipton 13.
Ian Evans took 5-36 to set up Oxford 2nd for a three-wicket win over Banbury 2nd.
Only Ed Phillips (52) and Andrew Sabin (40) enjoyed success against Evans as Banbury were bowled out for 170 after being asked to bat.
Ollie Murrey took 4-54, but Chris Thomas (43) saw Oxford to 174-7.
Banbury 2nd 10, Oxford 2nd 25.
Duncan Bradshaw struck some lusty blows to take Bicester & North Oxford to victory at Cumnor.
The home side had started well, Kiwi Andrew Robertson scoring 81 in a century partnership for the second wicket with Graham Scott (42).
Steve Slade crashed 31 not out to take his side to 224-8.
Bicester made a steady start, before off spinner Umair Ghazali (4-76) had them in a spot of trouble.
But Bradshaw's 78 and Kris Talsania's 34 not out eventually saw them home by five wickets.
Cumnor 9, Bicester & NO 25.
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