Jodie Burrage made it through to the quarter-finals of the Linz Open but fellow Briton Katie Boulter was knocked out in Austria.
British number two Burrage beat Romania’s Jaqueline Cristian 6-3 7-6 (7-5) to reach the last eight of a WTA 500 event for the first time.
She will play Jelena Ostapenko or Clara Tauson in the next round.
British number one Boulter, 27, suffered a 7-6 (7-2) 6-4 defeat by Anastasia Pavlyuchenkova.
In a closely fought contest, Boulter lost a first-set tie-break before Pavlyuchenkova broke her in the ninth game of the second set and then served out the match.
Burrage, 24, came through two qualifying rounds and beat Varvara Gracheva before facing Cristian.
She was broken for the first time when serving for the match at 5-3 in the second set, but Burrage went on to win a tie-break to secure victory.