Matteo Arnaldi defeated Andrey Rublev 6–4, 7–5 at the Indian Wells Masters, a hard-court ATP Masters 1000 event, in the first round on 8 March 2025. The result constituted an upset, with Rublev entering as the pre-match favourite at 1.47 odds compared to Arnaldi's 2.89. Arnaldi's composed performance across both sets—particularly his control in the second, where he edged a tight contest—demonstrated his capacity to compete against higher-ranked opposition on the North American hard courts. The Italian's victory represents a notable scalp early in the desert swing and suggests potential momentum heading into the tournament's deeper rounds.