Gloucestershire produced an impressive all-round performance to beat Yorkshire by 36 runs in a rain-shortened Yorkshire Bank 40 fixture at Bristol and maintain pressure on arch rivals Somerset at the top of Group C.
Chris Dent top-scored with 56 and there were useful contributions from Michael Klinger (45) and Ian Cockbain (46no) as the home side posted an imposing 229 for six in 27 overs after being put in.
Dan Hodgson registered a competition-best score of 76 as Yorkshire made a decent fist of chasing, but 17-year-old off break bowler Miles Hammond accounted for him and finished with two for 29 in only his third senior appearance as Gloucestershire turned the screw. Left arm seamer David Payne weighed in with four for 44 from five overs as Group C strugglers Yorkshire were dismissed for 193 in 26.3 overs.
Opening pair Klinger and Hamish Marshall have made a habit of providing Gloucestershire with a solid base in the 40-over competition this season and this game proved no exception as the first wicket yielded 52 runs in seven overs.
Both took the aerial route during the power play, Marshall striking a quartet of fours in contributing 27 at a run a ball before giving slow left armer Adil Rashid the charge and being stumped by Andrew Hodd. Klinger took an inexperienced attack to task, greeting Ben Coad with sixes over long-on and square leg in the space of four balls.