A 219-run partnership for the first wicket between Luke List (116) and Paddy Daniel (100) set Oxford Downs 2nd on the way to a crushing win at Chearsley.
The home side were made to suffer after electing to bowl as Downs racked up 275-3.
James Veness (35) then put up some token resistance, but James Florey (4-12) helped bowl out Chearsley for 142.
Chearsley 3pts, Oxford Downs 2nd 25.
Challow & Childrey 2nd suffered a similar fate to Chearsley after choosing to field first at Stokenchurch.
Arshad Latif hit a fine 121 and Joe Brown 65 as the home side reached 251-6 despite Luke Jones's 4-26.
Justin Penrose (62) led Challow's reply, but they fell well short opn 149.
Stokenchurch 25, Challow & Childrey 2nd 4.
Shipton-under-Wychwood 2nd completed a trio of clubs that regretted fielding first after they slipped to a 53-run defeat at Kimble.
Andy Russel's 105 was the key innings of the match in Kimble's 190 all out, in which Anthony Prior-Wandesforde took 4-30.
Ali Russel grabbed 4-47 in Shipton's 137.
Kimble 25, Shipton 2nd 7.
Ansar Aslam's unbeaten 85 took Banbury Twenty 2nd to 216-5 at home to Princes Risborough.
Mike Wedderburn (36) also batted well for Twenty and he then took 3-22, but Risborough played for a draw from early on and crawled to 121-7.
Banbury Twenty 2nd 14, Princes Risborough 6.
Stephen Lewis scored 85 in Buckingham Town 2nd's 199 at home to Twyford, who were then bowled out for 154.
Buckingham 2nd 25, Twyford 7.
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