Daniil Medvedev defeated Daniel Altmaier 6–3, 6–3 in the first round of the ATP 250 Halle grass-court tournament on 16 June 2025. As the heavy pre-match favourite with odds of 1.19, Medvedev delivered a commanding performance to advance with a straightforward two-set victory over the German qualifier. Altmaier, trading at 5.22, offered little resistance on the surface, unable to break Medvedev's serve-dominated display across both sets. The Russian's grass-court credentials were on full display as he progressed smoothly through the opening round. Medvedev's emphatic win suggests he is building momentum ahead of the tournament's later stages.