A review of Friday's action in the NatWest T20 Blast, including wins for favourites Notts and Worcestershire.
Durham (157-3, 20 overs) beat Yorkshire (156-7, 20 overs) by one run
Gloucestershire (152-3, 18.2 overs) beat Somerset (146, 19.4 overs) by seven wickets
Lancashire (173-5, 20 overs) beat Leicestershire (169-3, 20 overs) by four runs
Glamorgan (181-6, 20 overs) beat Surrey (175-7, 20 overs) by six runs
Nottinghamshire (189-4, 20 overs) beat Derbyshire (181-7, 20 overs) by eight runs
Essex (169-6, 19.4 overs) beat Hampshire (168-6, 20 overs) by four wickets
Sussex (167-5, 19 overs) beat Kent (163-9, 20 overs) by five wickets
Worcestershire (190-7, 20 overs) beat Birmingham (185-7, 20 overs) by five runs
Jake Ball showed his pedigree as Nottinghamshire boosted their NatWest T20 Blast hopes by sending North Group leaders Derbyshire to their first home defeat of the campaign.
Ball took three for 33 from his four overs to give the Outlaws an eight-run victory and take them to within a point of the Falcons.
Notts ended the night as Sky Bet's 7/1 joint favourites to lift the trophy later this month. Surrey are offered at the same price.
Worcestershire turned current form on its head with a five-run victory over the Birmingham Bears. John Hastings, who made 51 from 20 balls, and Joe Clarke, whose 34 came from 15 deliveries, set up a meaty total of 190 for seven for the Rapids and it proved just too much for the Bears, who ended on 185 for seven.
Aneurin Donald's brilliant 76 off 40 balls shone out under the Kia Oval floodlights as Glamorgan strengthened their position at the top of the South Group table with a six-run victory over Surrey.
Tom Curran almost stole the match for Surrey at the death after scoring 51 not out from 27 balls, making a mockery of 50 runs being required from the last three overs to overhaul Glamorgan's 181 for six.
Having hit the second ball of Michael Hogan's final over for six to bring the equation down to nine from four balls, Curran was outfoxed by two slower balls from the veteran Australian seamer which he swung at and missed. He was left needing seven from the last ball.
Yorkshire's quarter-final hopes suffered another setback with defeat to North Group stragglers Durham at Chester-le-Street.
The visitors made a hash of chasing Durham's 157 for three, finishing on 156 for seven after they appeared to be coasting. Paul Collingwood hit 88 for Durham and produced the crucial run-out of Alex Lees.
Gloucestershire gained derby bragging rights over Somerset with a seven-wicket victory in Bristol.
Somerset could muster only 146 all out with Johann Myburgh (42) and Craig Overton (33 not out) the main contributors.
In reply, the home side never looked in trouble as Ian Cockbain (47 not out), Michael Klinger (35), and man-of-the-match Kieran Noema-Barnett (33 off 12 balls) took them to their target with 10 deliveries to spare.
Adam Wheater returned to Hampshire to haunt his former county with a thrilling half-century in a four-wicket win that boosts Essex's hopes of reaching the last eight.
Wheater, who jumped ship from the Ageas Bowl for Chelmsford at the end of the 2016 season, showed his previous employers what they let go as his innings of 50 helped Essex to just their third win of the campaign.
Jos Buttler's half-century set up Lancashire for a nervy win over Leicestershire to improve their chances of qualifying for the next stage.
Lancashire ended a run of four defeats with a last-ball victory as Buttler's 57 underpinned a total of 173 for five.
Sussex captain Chris Nash thumped 73 from 58 balls to dampen Kent's hopes of reaching the quarter-finals.
Nash bludgeoned seven fours and two sixes as Sussex overhauled Kent's 163 for nine, built around a big-hitting 74 from Sam Billings, with five wickets and an over to spare at Canterbury.