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SHANGHAI -- Alexander Zverev clinched the year-end No. 1 ranking on Monday to cap a breakout year in which he won his first two Grand Slam titles.
Helped by a season-ending injury to Jannik Sinner, the 29-year-old Zverev will become the oldest player to achieve the year-end honor for the first time, the ATP Tour announced.
Zverev is currently No. 2 but will overtake No. 1 Sinner before the season ends next month.