Chalgrove shattered Bourton Vale's 100 per cent record with a 12-run victory.
Chalgrove were restricted to 152-7 after being inserted, with seamer Steve Stroud taking 4-48.
But then Bourton slumped to 42-6. A seventh-wicket stand of 72 by skipper Matt Welton (50) and Andy Harvey (35) gave them hope before they fell a dozen runs short.
Joyner (4-18) and Joshi (4-64) were Chalgrove's match-winners.
Bourton Vale 3, Chalgrove 30
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