Wallingford made it three wins from three in South West 2 East with a 30-15 success at Olney as Jackson Sayce continued his fine kicking form.
Wing Sayce slotted five first-half penalties, including two from the halfway line, as Wallingford's pack gained control.
Centres Pete Holton and Johnny Collett linked up well in defence against Olney's pacy backs.
Olney hit back with a try early in the second half, but Henry Venners, Derek Viljoen and Henry Pooler kept the visitors on the front foot.
Collett cut a great line to score Wallingford's first try, which Sayce soon followed up with a penalty.
Man-of-the-match Kris Blaszko reacted first to a loose ball and ran in from 30 metres for the visitors' next score, Sayce converting.
Olney managed two late tries as they threw caution to the wind, but Wallingford's victory was never in doubt.
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