Neil Penny and Barry Nutt shone as Bicester were hammered 55-0 by Chipping Norton in the BB&O Premier Division at Greystones.
Wing Penny grabbed a hat-trick of tries, while full back Nutt bagged a brace and kicked 15 points.
Nutt converted his own try for the opener, but it was only 7-0 at half-time.
A penalty from Nutt got the ball rolling before he, Matt Dawson, Tom Hall, Penny and Richard Flather got in on the try-scoring act, Nutt converting five.
Alchester’s three-match winning run in Southern Counties North ended with a 19-17 defeat at Drifters.
The visitors trailed 19-3 at the end of a miserable first half that saw fly half Tom Miles kick a penalty and wing Ben Ancil yellow-carded.
Andy Blacklock gave Alchester hope with an intereption try on 60 minutes, converted by Miles.
Miles also converted a second try from Matt Beckley five minutes later, but Alchester could not snatch victory.
BB&O Div 2: Alchester 2nd 12, Bicester 2nd 33 (tries D Ahu-Gooch 2, J Holton; cons S Risbridger 3; pens Risbridger 4).