David Slade took 7-48 and Ben Jones hit 121 for Challow & Childrey in Division 2, but they still lost as Great & Little Tew staged a remarkable recovery.
Challow made 217 all out after choosing to bat, with Aussie quickie Anthony Smith (4-46) keeping the runs down at one end.
Slade then reduced Tew to 5-3 and 48-6, but a 107-run partnership between Dave Powles (92no) and Rob Garrett (71) turned the match.
The winning runs came in the 56th and final over, with seven wickets down.
Challow 11pts, Gt & Little Tew 25
Abingdon Vale's batsmen finally got their act together to amass 257-6 at Sandford St Martin, but their bowlers were unable to force the win.
Graham Coates hit 61 before Ed Tilley (57no) and James Boon (50no) added 109 from 14 overs to take Vale to 257-6.
Brendon Ham took 3-37 for Sandford, who promptly lost three wickets in the first three overs of their reply.
But Mark Robey (68) settled the home side's nerves and despite the efforts of Michael Cook, who took 3-67 from 27 overs, they played out for a draw on 144-5 from 55 overs.
Sandford St M 7, Abingdon V 13
Banbury 2nd and Oxford & Bletchingdon Nondescripts also played out a draw, which helped neither side's promotion prospects.
Off-spinner Mark Strong took 5-55 from 16 overs for Nondies as Banbury reached 185-9, Ed Smith top-scoring with 39.
Andrew Buckingham's 55 gave the visitors a platform, but they closed on 140-4.
Banbury 2nd 9, Nondies 9
Hanborough's bowling attack suffered some fearsome punishment before Bourton Vale declared after 46 overs with the score on 321-3.
Paul Lazenbury (129), Jamie Noble (90) and Hamza Saleh (69no) all enjoyed the conditions.
But the man-of-the-match Ryan Newhook took 8-69 to dismiss the bottom club for 164 all out and condemn them to their seventh defeat in eight starts.
Bourton Vale 25, Hanborough 4
Riaan Krynauw missed out on a ton by three runs, but his Tiddington side pulled off a vital one-wicket win at Long Marston.
The home side had made 201-9 after electing to bat, Mike Lyons leading the way with 72, while Matthew Maule took 4-72.
Lee Beesley (3-45) and Pete Toovey (3-45) kept Marston in the game, but Krynauw (97no) guided his side's tailenders over the winning line.
Long Marston 13, Tiddington 25
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