Gloucestershire made Yorkshire pay for a below-par innings as they claimed their first win in the Royal London One-Day Cup by three wickets with 28 balls to spare at Headingley.
The hosts were in deep trouble on 45 for five, but a sixth-wicket stand of 129 from Jack Leaning and Adil Rashid gave them hope as they limped to 192 all out.
Gloucestershire also struggled to rack up runs but Will Gidman's unbeaten 71, which included 10 fours, and decent efforts from captain Michael Klinger (37) and Jack Taylor (38) were enough to see them home.
Rashid, whose 71 was a limited-overs career best, was also the pick of the home side's bowlers and claimed three for 43 but it was not enough.
Earlier on in the day left-arm seamer David Payne shone for Gloucestershire, taking three for 31, as the visitors got off the mark in Group A after their defeat to Northamptonshire on Sunday.
Elsewhere, Northamptonshire were unable to make it two wins from two as Daryl Mitchell starred in an 88-run victory for Worcestershire at Campbell Park.
The 30-year-old took four wickets for just 19 runs as Worcestershire got the hosts all out for 186 in response to their 274 for nine.
Tom Fell (72) hit six fours and a maximum as he led the visitors' charge, while Ben Duckett missed out on a maiden List A half-century by a single run as he top-scored for the hosts.
It was honours even at Trent Bridge as Nottinghamshire and Somerset could not be split on 261 for eight.
James Franklin hit five fours in an unbeaten 59 as the hosts managed to set a decent target for Somerset to chase, despite Lewis Gregory taking three for 54.
Somerset looked to be on course to beat it after Marcus Trescothick (61) and Nick Compton (68) built a first-wicket stand of 125.
Colin Ingram also managed to pitch in with a half-century for the visitors but a series of cheap wickets lower down the order scuppered their chances of victory.
Warwickshire moved to the top of Group B with a 118-run victory over Sussex at Edgbaston, courtesy of Varun Chopra's stunning 111-run knock.
Will Porterfield (83) also chipped in to great effect as the hosts moved to 273 for five, while Jeetan Patel took four for 24 as Sussex were all out for 155.
Kent edged out Durham in a dramatic finale at the Spitfire Ground to claim their first cup win by four wickets with four balls remaining.
Durham, who were looking to avoid back-to-back defeats in the competition, finished on 271 for seven as Calum MacLeod fell just six runs short of a century.
But thanks largely to Rob Key (47) and Sam Billings (64) Kent moved to 255 for eight with three overs left.
James Tredwell (38 not out) then stepped up and made sure of the victory by hitting a boundary in each of the last few overs.