Double Grand Slam winner Zverev clinches year-end No. 1 ranking

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. Zverev became assured of finishing No. 1 when No. 3 Carlos Alcaraz was beaten by Zizou Bergs in Shanghai. Zverev won the French Open and U.S.