Johanna Konta claimed another top-10 scalp with victory over home favourite Roberta Vinci in the second round of the Internazionali BNL d'Italia in Rome.
The British number one continued her remarkable season by seeing off the world number seven 6-0 6-4.
Konta was exceptional in the opening set, dropping just seven points and outclassing last year's US Open finalist.
Vinci stopped the rot after seven games and the second set was much more of a battle as a boisterous home crowd attempted to unsettle Konta.
But the 24-year-old held her nerve superbly to serve out the victory after an hour and 13 minutes.
Heather Watson was unable to capitalise on a flying start in a 6-4 6-2 loss to Barbora Strycova.
The British number two won the opening four games against her Czech opponent but then lost 12 of the next 14 to slip to a second-round defeat.
Watson's second serve was exploited by Strycova, who won 19 of the 27 points on which the British player missed her first delivery.
It has nevertheless been a positive week for Watson, who came through two qualifying matches before defeating former French Open finalist Sara Errani in the first round.