Sophia Dunkley crafted her maiden international century as England decimated South Africa to register a 114-run win in the second one-day international in Bristol. Dunkley fell for 107 off the final ball of England's innings as the hosts posted a formidable 337-5. England's top four all scored more than 50 for the first time ever in a women's ODI. Charlie Dean took 4-53 and debutant Issy Wong returned 3-36 as South Africa failed to put up a fight. England lead the multi-format series 6-2 and the final ODI will be played at Leicester on Monday, starting at 14:00 BST.