Teenage Croatian Donna Vekic is through to the last four of the Aegon Classic in Birmingham after cruising past Sorana Cirstea in two easy sets.
Vekic, the world No 89 who turns 17 later this month, needed just 66 minutes to dispose of the No 3 seed 6-2 6-1 in her maiden grass court tournament at senior level, although the match was interrupted by rain three times.
Cirstea, ranked 24, could win just 11 points on her opponent's serve during the match while losing 12 of the final 13 games.
Vekic, who has already beaten Camila Giorgi, Urszula Radwanska and Maria Sanchez at the Edgbaston Priory Club this week, will now face Magdalena Rybarikova in the semi-finals.
Rybarikova, seeded 16, advanced with a 6-3 6-0 triumph over American Madison Keys.
Vekic said: "It was really difficult going out there so many times, but I tried to focus, and I think I was able to do that. It probably is my best performance so far.
"I think grass really suits my game. I like the speed of it and I like to dictate matches and I like to be in control in the points.
"Hopefully I can win Wimbledon. It's on grass, it's my favourite Slam and it's in London."
Meanwhile, Daniela Hantuchova got the better of Francesca Schiavone in a clash which went on for more than three hours.
Slovakia's Hantuchova beat the 15th-seeded Schiavone 6-7 (10-8) 6-4 7-6 (7-3), although the other semi-finalist will not be confirmed until Saturday after Sabine Lisicki and Alison Riske were taken off at 2-2 in their deciding set because of bad light.