British number three Dan Evans beat Germany's Mischa Zverev 6-4 6-4 at the Barcelona Open to secure a last-16 showdown against Dominic Thiem, who earlier knocked out Kyle Edmund.
Evans, the world number 43, had on Monday produced a first ATP Tour win on clay when he came through against Thiago Monteiro after a final-set tie-break.
The 26-year-old backed that up with a notable second-round triumph over Zverev, who posted an unexpected win against world number one Andy Murray at the Australian Open.
Evans took his first set-point opportunity against Zverev's serve and then rallied to level the second set at 3-3 having been broken by the 14th seed.
After seeing more break chances missed in game eight, Evans managed to fend off a recovery by the world number 35 as he held to then break Zverev again to love and seal victory in one hour and 23 minutes.
British number two Edmund had confidently defeated Frenchman Jeremy Chardy in round one, but c ould not get the better of Thiem on Tuesday as the Austrian world number nine won 6-1 6-4.
Thiem, who is seeded fourth, twice broke Edmund in the first set and then secured another crucial break to lead 3-2 in the second.
Edmund, the world number 42, could not then force two break chances of his own in the next game as Thiem went on to close out victory in one hour and 21 minutes to clinch his place in the third round.
Murray, meanwhile, is set to continue his comeback from an elbow injury on Wednesday when he takes on Bernard Tomic following the Australian's first-round win over German Dustin Brown.
At the Hungarian Open in Budapest, British number four Aljaz Bedene beat lucky loser Marius Copil 7-5 6-2 to move into the second round.
Copil took his place in the main draw following injury to Argentina's Federico Delbonis.
Bedene will next play Dutchman Robin Haase, the world number 46.
Source: PA
