Top seed Maria Sakkari was eliminated from the Nottingham Open at the quarter-final stage by world number 48 Beatriz Haddad Maia on Friday.
Haddad Maia made it three career wins out of three against Sakkari with a 6-4 4-6 6-3 victory to reach her first WTA semi-final on grass.
The Brazilian will now take on Tereza Martincova, who beat last year's runner-up Zhang Shuai 6-3 6-2, for a place in Sunday's final.
Sixth seed Alison Riske is also through to the last four after recovering from a set down to beat home favourite Harriet Dart 4-6 6-2 6-1.
Riske's sixth career semi-final on grass will come against Viktorija Golubic, who surprised Ajla Tomljanovic 6-3 7-6 (8-6) in the final match of the day.
At The Rosmalen Grass Court Championships, second seed Belinda Bencic's participation was ended with a straight-sets defeat to Veronika Kudermetova.
French Open quarter-finalist Kudermetova prevailed 6-4 6-2 in 87 minutes to snap a three-match losing streak against Bencic.
Russian compatriot Ekaterina Alexandrova is up next in the semi-finals after easing past American qualifier Caty McNally 6-0 6-1
Top seed Aryna Sabalenka is into her third semi-final in her past five tournaments, meanwhile, thanks to a 6-2 3-6 7-6 (7-5) win over Alison Van Uytvanck.
Shelby Rogers, a 3-6 6-1 6-4 winner against Kirsten Flipkens, awaits Sabalenka in Saturday's semi-final.