Somerset 197 for 6 (Abell 55, Gregory 44) Essex 193 for 6 (Elgar 77, Gregory 3-42) by four wickets

Abell top-scored with 55 from 36 balls and Gregory smashed 44 from 22 deliveries as Somerset reached their target of 194 with five balls to spare in a repeat of last year's final. Tom Banton, Will Smeed and Sean Dickson also made useful contributions in front of the Sky TV cameras to give a sellout crowd an evening to remember under the Taunton floodlights.

It was the perfect start for the defending champions, who have now won their last nine matches in the short format, while Essex have work to do after losing their opening two matches.

Determined to make a better fist of batting first following defeat to Gloucestershire at Bristol in their opening fixture 24 hours earlier, Essex made a reassuringly solid start on this occasion, Rossington and Elgar staging a stand of 67 in 7.3 overs.

With big shoes to fill after replacing Matt Henry as overseas pace spearhead, Australian Riley Meredith at least managed to keep things tight during three overs from the Marcus Trescothick Pavilion End that cost 16 runs. But Craig Overton proved significantly more expensive at the other end, the former England bowler conceding five fours and a six in going for 32 in three overs as the visitors raised 56 without loss from the powerplay, big-hitting Rossington proving especially destructive.

Having already harvested five fours, Rossington greeted Roelof van der Merwe with a towering six hit straight back over the spinner's head, only to then lose his off stump to Gregory in the act of swinging in the next over. His swashbuckling innings of 32, made from 24 balls, at least afforded the visitors a platform from which to launch.

Michael Pepper came and went quickly, attempting to reverse sweep van der Merwe and offering a straightforward catch to Ben Green at short third man with the score on 74 in the ninth. If home supporters sensed an opportunity to turn the tide, they were quickly disabused of the idea as Cox went on the attack, lifting Jake Ball over deep backward point for a maximum and then pulling the next ball for four as the 11th over yielded 14 runs to propel Essex into three figures.

Setting himself to bat through, the redoubtable Elgar found acceleration at the right time to go to 50 via 35 balls, reaching that landmark courtesy of his fifth four, a flowing off drive at the expense of Green. Somerset needed a break and it arrived in the fifteenth over, Cox miscuing to extra cover off the bowling of Gregory and departing for a 23-ball 30. He and Elgar had added 58 in 5.5 overs and set the stage for the big-hitting Paul Walter, who announced himself with a brace of fours and a six in the same Gregory over.

Back came the home side, Ball bowling Walter for 18 and Green making a mess of Daniel Sams' stumps to partially redress the balance. But Elgar was not finished, the veteran South African campaigner plundering 15 runs off the 18th to spoil Green's figures on his way to a superb 77, and only succumbing to Gregory in the final over.

Somerset required a flying start and Banton displayed aggressive intent by driving Aaron Beard over long-on for six and then collecting sumptuous cover-driven fours at the expense of Sams and Ben Allison. Not wanting to appear tardy in comparison, Will Smeed pulled Allison to the boundary and then mustered a brace of sixes in plundering 20 from Walter's first over to bring a packed audience to life.

Beard afforded Essex some relief, having Banton held at midwicket for a 14-ball 21 with the score on 49 in the fifth, but Smeed continued to trade in boundaries, smiting Sams for two successive maximums. His mercurial innings came to an abrupt halt when he drove the very next ball to cover and departed for a 16-ball 39, having mustered three fours and a quartet of sixes as the home side reached 64 for 2 at the end of the powerplay.

Tom Kohler-Cadmore fell to Matt Critchley in the next over, brilliantly caught by the diving Simon Harmer at mid-off, as Essex deployed spin at both ends in an attempt to apply pressure. Somerset reached halfway on 90 for 3, requiring a further 104 runs at 10.4 an over.

Dickson brought up three figures with a straight-driven six off Critchley, while Abell found the boundary often enough to keep the chase on track during the middle overs. Abell smashed two fours and a six off the 13th , sent down by Luc Benkenstein, to bring up the 50 partnership in 36 balls. But Beard returned to have Dickson caught in the deep for a 19-ball 26 as an enthralling contest took another twist.

New batter Gregory injected immediate excitement, pulling Allison for a huge six, at which point the home side required a further 54 runs from 30 balls. Crucially, the fifth wicket pair were able to keep the rate at around ten an over, Abell going to 50 via 31 balls with his first six.

Somerset needed a big over and Gregory provided it by smashing three sixes off the 17th, bowled by Critchley, to bring the rate under a run a ball for the first time. Abell contributed five fours and a six before being caught at the wicket off the bowling of Walter, while Gregory mustered four sixes and a brace of fours to put the outcome beyond doubt as Somerset's renowned batting line-up came good at the death.