On October 23, 2025, at the ATP 500 tournament in Basel, France's Valentin Royer, ranked 69th in the world, was eliminated in the second round by Canadian player Denis Shapovalov, ranked 23rd. Royer, a lucky loser, was defeated in straight sets, 7-6 (3), 6-2, in a match lasting 1 hour and 24 minutes. In the first set, Royer managed to break Shapovalov's serve at 3-2 and served for the set at 5-3, but failed to close out, facing two break points and ultimately losing the set in a tie-break. Shapovalov took control early in the tie-break, winning it 7-3. In the second set, Royer saved three break points at 1-2 but ultimately succumbed on the fourth break point. Serving at 2-5, Royer lost his serve again, allowing Shapovalov to close out the match with a 6-2 victory. Shapovalov will face Brazilian Joao Fonseca in the quarterfinals, after Fonseca advanced due to an opponent's withdrawal. Meanwhile, Canadian Felix Auger-Aliassime, ranked 12th, also progressed by defeating Croatian Marin Cilic in two tight tie-breaks, 7-6 (2), 7-6 (2), in 1 hour and 49 minutes.