Yorkshire got their Twenty20 Cup campaign up and running when they celebrated a first victory in the competition by 11 runs against Derbyshire at Chesterfield.
Anthony McGrath smashed six sixes in a 42-ball unbeaten 72 which carried Yorkshire to 169 for five and although Greg Smith followed his century at Headingley on Thursday with 68 from 42 balls, the Phantoms could only muster 158 for six in reply.
Although Yorkshire did suffer by an injury scare to England captain Michael Vaughan who was unable to field after he ricked his neck while batting but hopes to be fit for Tuesday's game at Leicester.
McGrath's innings provided splendid entertainment for a 5,000 crowd and swung the contest in the visitors' favour with 86 coming from the last seven overs of the innings after Derbyshire's seamers had kept Yorkshire's batsmen in check.
It set up a target that proved too daunting for the home side who lost their third game in the North Division and cannot afford many more slip-ups if they are to make the quarter-finals.
Yorkshire had lost their previous two Twenty20 games, including the home clash with Derbyshire, and their batsmen struggled to time the ball at the start of the innings as only 17 came from the opening five overs.
Craig White was bowled fourth ball aiming a big drive at Charl Langeveldt and although Andrew Gale drove Graham Wagg for a straight six, he fell to a fine running catch at long off by Langeveldt in the next over.
Vaughan played a tennis style shot over the long leg boundary off Rikki Clarke and square cut the Phantoms skipper for another four but then clipped Wavell Hinds to deep midwicket in the 11th over.
Yorkshire had scored only 67 for three at the end of the 11th over but McGrath pressed the accelerator in the next over when he drove John Sadler's medium pace for six.
Jacques Rudolph was run out backing up for five but McGrath then cut loose, driving off-spinner Jake Needham for six before he lifted Nayan Doshi high over the sightscreen at the Lake End.
He drove Needham for two more sixes and there were five in a 29-ball fifty which had put his side on course for a competitive total.
Gerard Brophy helped him add 59 in five overs before he pulled Clarke to deep midwicket but McGrath signed off by pulling a Graham Wagg full toss for his sixth six in the last over.
Derbyshire lost Dominic Telo for 12 in the fourth over but Smith was soon dispatching the ball to all parts on his way to a 33-ball half-century which included eight fours.
When he twice drove McGrath for four and pulled him for six in an over which cost 16, Derbyshire appeared to be on course for victory but the game turned when Smith set off for risky single to backward point and was run out by Matthew Hoggard's throw.
David Wainwright had to leave the field with a damaged left hand when he tried to stop a searing drive from Clarke and White finished an eventful over by having Hinds brilliantly caught by Darren Gough at fine leg.
Jamie Pipe drove Hoggard for a huge six but then holed out to long off and Sadler fell to another catch in the deep as the asking rate climbed.
Derbyshire needed an unlikely 25 off the last over bowled by Gough and although Wagg cut the first ball for six over deep point, Yorkshire were never in danger.