Otto Virtanen defeated Dino Prizmic 6–4, 3–6, 6–3 in a Davis Cup Finals round-robin encounter on hard court on 15 September 2023. Virtanen claimed the opening set with a break of serve, but Prizmic levelled the match by taking the second set convincingly. The Finnish player reasserted control in the decider, securing the decisive break to close out victory. The win represents a solid performance for Virtanen in the group stage and strengthens his position in the Davis Cup Finals standings.