Two-time Wimbledon champion Petra Kvitova kept her hopes alive for a second successive title at the Nature Valley Classic in Birmingham, beating German Julia Goerges 6-1 6-4 in the quarter-finals on Friday.
The 28-year-old Czech, who has lifted four WTA titles this year, dominated the contest with 20 winners and saved all three break points she faced to progress to her sixth career semi-final on grass.
Kvitova has not dropped a set this week, and recorded a fifth consecutive quarter-final win this season.
Up next, for Kvitova is Romania's Mihaela Buzarnescu, who produced one of her finest grasscourt performances to put away second seed Elina Svitolina 6-3 6-2.
Svitolina made 25 unforced errors, allowing Buzarnescu to capitalise with a pair of break points in each set to book a place in her first-ever Premier-level semi-final in just her second grass tournament at WTA level.
"I'm so happy with my game today. I really managed to focus and play well," Buzarnescu said after the match.
"It's really been an amazing two weeks I've had, having played so little in the grass in my career."
Earlier in the day, 2009 winner Magdalena Rybarikova and two-time runner-up Barbora Strycova set up an intriguing semi-final clash after the pair collected convincing victories.
Rybarikova ended the run of Slovenian qualifier Dalila Jakupovic 6-2 6-4, while Strycova progressed after her opponent Lesia Tsurenko was forced to retire with an injury, trailing 7-5 3-0.
Twenty four hours after being booed for having the audacity to take down a tennis great, Alexander Zverev returned to topple another one as he stunned Novak Djokovic to win the ATP Finals title on Sunday.
Novak Djokovic sealed a showdown with Alexander Zverev in the final of the ATP Finals after a comprehensive victory over Kevin Anderson in London.
Roger Federer will end the year tantalisingly short of his 100th career title after the king of men's tennis was forced to bow to young prince Alexander Zverev at the ATP Finals on Saturday.
Roger Federer secured his place in the semi-finals of the ATP World Tour Finals by beating Kevin Anderson 6-4, 6-3 at London's O2 Arena.
Dominic Thiem beat Kei Nishikori handily at the ATP Finals, 6-1 6-4 for his only win in the group stage of the competition.
Marin Cilic came from a set down to beat John Isner 6-7 6-3 6-4 at the ATP World Tour Finals at London's O2 Arena on Wednesday evening.
Novak Djokovic is on the cusp of the ATP Tour finals semi-finals after a 6-4 6-1 win over Alexander Zverev at the O2 Arena on Wednesday.
Roger Federer is still live at the ATP World Tour Finals thanks to a comfortable 6-2, 6-3 victory over an out-of-sorts Dominic Thiem on Tuesday.
South Africa's Kevin Anderson enjoyed a shockingly comfortable win over Kei Nishikori at the ATP Finals, beating Kei Nishikori 6-0, 6-1.