Jannik Sinner draped his left arm and his racket around Carlos Alcaraz’s neck. Alcaraz then put his right arm on Sinner’s shoulder.

The friendly greeting between the two players after the latest in a series of high-stakes matches was a fitting image for the year in men’s tennis .

Sinner and Alcaraz are dominating the game and their levels are so close that they keep alternating who wins the biggest titles.

Alcaraz beat Sinner in a fifth-set tiebreaker in the French Open final ; Sinner got revenge at Wimbledon ; Alcaraz won again at the U.S. Open ; and then Sinner defended his ATP Finals title before his home fans in Turin on Sunday.

Alcaraz sealed the year-ending No. 1 ranking, while No. 2 Sinner goes into the offseason coming off a confidence-boosting victory over his riv

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