Chris Thompson hit 75 and Greg Pearson scored 38 as Sandford St Martin made 171-7 to beat Didcot with 11 balls to spare in Division 3.
The visitors were bowled out for 168, Ross Fryatt hitting 48 as Danny Smith took 4-54.
Rob Keat (4-56) almost matched those figures after tea, but his efforts were in vain.
Sandford St Martin 25pts, Didcot 10
Shipton-under-Wychwood 2nd slumped to 69 all out at home to Oxford Downs 2nd, who made the most of winning the toss.
Steve Roberts (4-14) and Darryl Woods (3-8) had everything their own way.
Downs did not find batting much easier against Valentio Guiraud (3-24), but they made it to 70-6 in 22 overs.
Shipton-under-Wychwood 2nd 6, Oxford Downs 2nd 25
Peter Ferguson took 5-34 to bowl Bicester & North Oxford to a seven-run victory over Great & Little Tew 2nd.
Bicester made 165-9 with the help of Richard Simpson’s 41.
Kevin Taylor took 5-36 for Tew, who fell just short on 158.
Bicester & North Oxford 25, Great & Little Tew 2nd 6
Oxford Downs’ home game with Wolverton Town in Division 1 was rained off.
Both teams received six points.
Dan Swindells (3-17) and debutant Olly Burnley (3-21) helped Witney Mills reduce East Oxford to 74 all out in their Division 4 encounter.
Mills were less impressive with the bat, but made it to 75-6 in the 25th over.
East Oxford 6, Witney Mills 25
In Division 6, Great & Little Tew lost by four wickets against East Oxford 2nd.
Zahid Ali took 4-24 as Tew were rolled over for 125.
Carl Haggett captured 3-46, but East Oxford got home for the loss of six wickets.
Gt Tew 3rd 7, East Oxford 25
Mark Cook hit a half-century as Sandford St Martin 2nd beat Oxf-ord 4th by six runs in Division 7.
Cook’s knock of 52 saw Sandford to 151-8, before they dismissed Oxford for 145.
Oxford 4th 5, Sandford 2nd 25
Steven English took 4-8 as he helped Shipton-under-Wychwood 3rd to a nine-wicket win against Oxford & Bletchingdon Nondescripts 3rd in Division 8.
English helped restrict Bletching-don to 57-9, before Shipton strolled home for the loss of a wicket.
Ox & Bletch Nondies 3rd 1, Shipton-under-Wychwood 3rd 25
An unbeaten 75 from Robert Blundell was in vain as Witney Mills 2nd lost by one run to Long Marston 3rd in Division 9.
Dennis Harvey took 5-25 as Long Marston were restricted to 179-8.
However, Witney Mills were dismissed for 178 in reply, Martin Keable doing the damage with 5-46.
L Marston 3rd 25, Witney Mills 2nd 6