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AlcarazSinner Duopoly Tightens Grip As Season Closes With Split Honors

With Sinner finishing as ATP Finals champion and Alcaraz year-end No. 1, experts say their advantage over the field remains substantial heading into the Australian Open.

Overview

  • Jannik Sinner defeated Carlos Alcaraz 7-6(5), 7-5 to retain the ATP Finals title in Turin, capping a season in which the pair split the four majors.
  • Alcaraz ends 2025 as world No. 1 with eight titles, while Sinner finishes No. 2 with six trophies, and the ranking gap to No. 3 Alexander Zverev is reported at 6,340 points.
  • Following a right thigh/hamstring issue at the ATP Finals, Alcaraz withdrew from Spain’s Davis Cup squad and now has multiple exhibitions scheduled before the 2026 season.
  • Jimmy Connors questioned whether Alcaraz’s off-season exhibitions could blunt his Australian Open readiness, even as others argue top players can handle the workload.
  • Data highlights fine margins between the rivals, with Sinner posting a 17-3 tiebreak record in 2025 versus Alcaraz’s 17-10, and Alcaraz and coaches tipping 19-year-old Joao Fonseca—now ranked No. 24—as a potential emerging challenger.