Southern Vipers currently leads the Rachael Heyhoe Flint Trophy points table with four wins in four games.
Diamonds bowlers Smith and Marlow took 3 wickets each. Attacking bowling performance restricted the Sunrisers to 188 runs. Diamonds won the nail-biting match by 6 runs.
The third edition of the Rachael Heyhoe Flint Trophy is all set to commence from July 2 (Saturday). The tournament will be played in two halves, with the first part