Somerset 251 for 7 (Dean 76, Holland 70) beat Durham 248 for 9 (Marlow 71, Anderson 5-40) by three wickets.

Somerset won the toss and Anderson accounted for Mia Rogers, Hollie Armitage and Mady Villiers in a devastating new ball spell of 3 for 25. Marlow and Danielle Collins added 36 for the fourth wicket, but Chloe Skelton had Collins held at point and Harris induced Bess Heath to hit to mid-wicket.

Somerset would have been in an even stronger position had it not been for two unfortunate incidents. Marlow was dropped on 27 by Holland on the square leg boundary off the bowling of Dani Gibson, while Thompson was afforded the benefit of the doubt by umpire Sue Redmond after apparently being run out by Dean.

Both cashed in on their good fortune to effect a fundamental shift in momentum. Adopting a high-risk strategy and riding their luck on occasion, these two had advanced the score to 163 by the time Harris persuaded Marlow to hole out to long-off.

There was no respite for the home side as Larosa launched a fearsome assault, the South Australian striking the ball cleanly in raising six fours and a six in a whirlwind knock of 44 from 31 deliveries. The Adelaide Strikers all-rounder had contributed 41 in a partnership of 51 in 6.2 overs with Thompson when she chopped on to the returning Anderson.

Sophie Luff ran out Thompson and Anderson then cleaned out Katherine Fraser to become the first Somerset bowler to take a List-A five-for since Nicole Harvey’s 5 for 22 against Surrey at Taunton in 2017.

Somerset openers Luff and Bex Odgers fell to Larosa and Lauren Filer respectively as Durham made inroads with the new ball, while Katie Levick bowled Emma Corney for 22 and Villiers had Gibson held at extra cover as spin further reduced the home side to 84 for 4.

Holland and Dean dug in thereafter, finding the gaps, running hard between the wickets and punishing the poor ball when it came along to post a 50 partnership via 48 deliveries. Holland went to a methodical half century from 68 balls, while the more aggressive Dean faced 19 deliveries fewer to reach the same landmark as the partnership realised three figures.

Holland’s 90-ball innings was terminated in the act of slog-sweeping Fraser to mid-wicket, while Filer removed Jess Hazell for 17 with the score 217 for 6. But Dean remained at large long enough to put the outcome beyond doubt, the England captain accruing 6 fours.