Mandhana hits 52 off 19 balls as Storm beat Lightning
Lancashire Thunder beat Southern Vipers by four runs in the Kia Super League despite Tash Farrant's hat-trick.
The Vipers needed five runs to win from the final ball but Fi Morris was caught off Emma Lamb to settle a tense game.
Western Storm's Smriti Mandhana earlier hit the fastest KSL fifty as they won by 18 runs against Loughborough Lightning, in a reduced-overs match.
But wet weather meant Surrey Stars' game with Yorkshire Diamonds was abandoned without a ball being bowled.
India's Mandhana hit a record-breaking 52 from 19 balls for the defending champions Storm at Taunton in a game that saw just six overs per side after rain had delayed the start.
England and Storm skipper Heather Knight was dismissed for a duck but they still posted 85-2 from their six overs and Loughborough could not match the required run rate in reply.
Sophie Devine hit a fine unbeaten 46 from 21 balls - including four sixes - for Lightning but the visitors still fell 18 runs short.
What followed in Liverpool was a second loss from three matches for the Vipers, who finished top of the round-robin table in each of the past two campaigns.
Evelyn Jones hit 69 for the hosts before she fell at the start of England left-arm seamer Farrant's stunning hat-trick, which also dismissed Sophie Ecclestone and Lamb as Lightning slipped from 123-2 to close on 137-6.
England and Vipers wicketkeeper Tammy Beaumont had earlier stumped Georgie Boyce but then took a blow to the head at the tail end of the innings.
The 27-year-old failed the subsequent concussion test during the interval, and was replaced by Paige Scholfield for the Vipers' innings.
In response, the visitors began well with Suzie Bates' 40 and Danni Wyatt's 39 from 29 balls but they were undone by Lightning all-rounder Lamb's 4-17 in her devastating four overs.
