Fieldside wasted little time in brushing aside Morris Motors 5-1 to reach the semi-finals of the Oxford and District League Atox Cup.
And Riley are also in the last four after seeing off Eysham by the same score.
Simon Aries (scratch) gave Fieldside a good start when he beat Roger Tomlin (+20) 75-49.
Bob Chivers (scratch) made it 2-0 when he overpowered Doug Baker (+20) 75-47 and then Paul Robinson (scratch) beat Bob Hayward (+20) 75-55.
Tomlin (+20) beat Aries (scratch) 75-63 to make it 3-1, but Chivers (scratch) saw off Baker (+20) 75-46 and Robinson (scratch) defeated Hayward (+20) 75-42 to seal victory.
At Eynsham, Gary Bough (+20) and Alan Copelin (+20) won two games apiece, with Malcolm Bough (+20) claiming the fifth.
Lawrence Parsons (+20) won Eynsham's sole rubber.
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