Nuno Borges defeated Stefanos Sakellaridis 7–6, 6–3 at the ATP 250 in Athens on hard court in the first round, confirming his status as the clear pre-match favourite with odds of 1.24 to Sakellaridis's 4.44. Borges secured a tight opening set via tiebreak before establishing control in the second, where he broke through to claim a comfortable victory. The Portuguese player's composed performance against the Greek opponent underlined his positioning in the draw and sets up a second-round encounter at the Greek capital event.