Madison Keys defeated Ons Jabeur 6–0, 7–5, 6–1 in the Madrid Masters 1000 quarter-final on clay on 30 April 2024, delivering an upset against the pre-match favourite. Keys' performance was marked by a dominant opening set, which she claimed without loss, before Jabeur mounted a competitive second-set challenge that extended to 7–5. The American reasserted control in the decider, winning 6–1 to secure a commanding three-set victory. The result sends Keys through to the semi-finals and represents a significant statement on the Madrid clay, where Jabeur's seeding and odds advantage proved insufficient to withstand Keys' aggressive approach.