South is the current British number four
Britain's Melanie South reached the third round of the DFS Classic with a gutsy 6-3 7-5 win over Sybille Bammer.
The Surrey 22-year-old displayed great courage to oust the Austrian fourth seed in a match in which there were twice as many service breaks as holds.
The British number four twice fought back from 0-40 down to hold serve as she beat the world number 28.
She was also confirmed as a Wimbledon wildcard entry with Elena Baltacha, Katie O'Brien and Naomi Cavaday.
South said: "I don't feel I served that well but I fought really hard and returned well. I kept being aggressive because I wanted to win it in two sets and not go to a third."
South will now play Japan's Aiko Nakamura or Israel's Tzipora Obziler in the third round on Thursday, hoping to emulate Sue Barker - the only Briton to ever reach the quarter-finals in Birmingham