Marta Kostyuk defeated Markéta Vondroušová 7–6, 6–2 in the Stuttgart WTA 250 semi-final on clay on 20 April 2024, upsetting the pre-match favourite. Vondroušová, seeded higher in the betting markets at 1.45 odds, could not maintain momentum through the opening set, which went to a tie-break before Kostyuk clinched it. The Ukrainian then dominated the second set, breaking serve multiple times to secure a commanding victory. The result marks a significant scalp for Kostyuk on the Stuttgart clay and sets up a final appearance for her.