Cumnor were involved in a thrilling high-scoring draw against Buckingham - with the two sides finishing on level scores in a dramatic finish.
Steve Beck rattled up an unbeaten 162 as visitors Buckingham totalled 257-6, thanks in no small measure to a hatful of dropped catches.
Malcolm Evans (91) and Ian Crosby (46) led Cumnor's spirited reply. But, with the scores level, Reece Morgan (4-80) took his fourth wicket with the last ball of the innings to leave Cumnor having to settle for a draw on 257-7.
Cumnor 16, Buckingham 17
Mohsin Rana produced a fiery spell of bowling to pick up 5-44 and set Rover Cowley on the way to a four-wicket win over Kimble .
Salman Fazal (44 no) provided the only resistance as last year's Division 2 champions collapsed to 119 all out.
Fazal then bowled unchanged, but was unable to stem the tide as Stewart Laudat (31) steered Rover to 120-6 and maximum points.
Rover Cowley 30, Kimble 10
Steve Roberts (44) and Luke List (35) figured prominently in Oxford Downs's 202-6 after they were asked to bat first at Challow & Childrey.
List then picked up 6-54 to peg Challow back to 182-9 after good knocks from Julian Penney (56) and Mark Powell (59).
Challow 4, Oxford Downs 18
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