In Stuttgart, world number one Iga Swiatek continued her winning streak with a straight-sets victory over Emma Raducanu in the quarter-finals, extending her run to 10 consecutive wins at the tournament. Meanwhile, Aryna Sabalenka and Coco Gauff faced surprising defeats.

Swiatek, the defending champion, defeated Raducanu 7-6 (7/2), 6-3 in just over two hours. Despite Raducanu's strong start, Swiatek capitalized on her chances and maintained her composure throughout the match.

In other matches, reigning Wimbledon champion Marketa Vondrousova staged an impressive comeback against Aryna Sabalenka, winning 3-6, 6-3, 7-5. This victory marked Vondrousova's first win over Sabalenka in six years.

Ukraine's Marta Kostyuk caused a major upset by defeating US Open champion Coco Gauff 3-6, 6-4, 7-6 (8/6). Kostyuk battled back from deficits in the second and third sets, displaying her resilience and determination.

Swiatek will face Elena Rybakina in the semi-finals, while Vondrousova will take on Marta Kostyuk for a spot in the final. Both semi-final matchups promise to be exciting clashes between top-tier players vying for a place in the title match.