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·500·HardCarlos Alcaraz won after Denis Shapovalov retired (7(7)-6(3), 2-1) — Japan Open 2026 Quarterfinal.
Carlos Alcaraz and Denis Shapovalov: Carlos Alcaraz leads 3–0 across 3 recorded meetings.
Top seed and defending champion Carlos Alcaraz reached the Japan Open semifinals when Denis Shapovalov retired trailing 7-6(3), 2-1 after 82 minutes. The opening set produced six breaks of serve, three apiece. ATP No. 46 Shapovalov twice led by a break, at 4-2 and 5-3, and Alcaraz broke straight back each time. Alcaraz then broke for 6-5 but was broken serving for the set, sending it to a tiebreak. The second set stayed on serve. Alcaraz has gone to a first-set tiebreak in all three of his matches this week. He is two wins from retaining his title.