Madison Keys defeated Tereza Valentova 6–4, 6–1 in the Adelaide WTA 250 round of 16 on hard court, confirming her status as pre-match favourite with odds of 1.64 to Valentova's 2.21. Keys controlled the opening set, breaking serve to secure a 6–4 victory before dominating the second, dropping only one game as she advanced with a comprehensive performance. The decisive margin reflected Keys's superior court positioning and consistency throughout the encounter. This victory maintains Keys's momentum in the early Australian summer season and sets up a quarterfinal appearance at Adelaide.