Carlos Alcaraz will look to finish the season on a high at this week's Paris Masters and the ATP Finals from Nov 15. (EPA Images pic)BENGALURU: Carlos Alcaraz expects the battle at the top of men's tennis to be more than a two-horse race with Jannik Sinner in 2027 after Alexander Zverev broke their stranglehold on the Grand Slams and Ben Shelton showed signs he could become part of the elite.

Alcaraz split the four Grand Slams with Sinner in the 2024 and 2025 seasons, but injuries to the top two this year left the door open, with Zverev winning the French Open and US Open.

With Shelton reaching the Flushing Meadows final, Alcaraz expected no shortage of genuine contenders for the big titles.

"Pre-season is really important," Alcaraz told reporters after his Vienna Open triumph on Sunday.