Marta Kostyuk defeated Anastasia Potapova 6–2, 1–6, 6–1 in the Madrid Masters 1000 semi-final on clay on 30 April 2026, confirming her status as pre-match favourite with odds of 1.34 to Potapova's 3.2. After dropping the second set, Kostyuk reasserted control in the opening and closing frames, demonstrating the consistency required to navigate the tournament's demanding surface. The Ukrainian's recovery from the second-set lapse proved decisive, as she imposed her game to seal a commanding victory that advanced her to the final. The result underscores Kostyuk's current form on clay and positions her as a genuine contender for the title.