Hubert Hurkacz defeated Hugo Dellien 7–5, 6–4 at the ATP Monte Carlo Masters on clay in the first round, as the Polish favourite justified his odds with a straightforward performance. Hurkacz controlled both sets with consistent play, breaking Dellien's serve at crucial moments to secure the opening set before consolidating his advantage in the second. Dellien, ranked well outside the top 100, offered limited resistance against a player accustomed to the demands of Masters 1000 events. The result represents a routine progression for Hurkacz, whose clay-court credentials remain solid despite the surface not being his primary strength, and he advances to face stiffer opposition in the following round.