For 36 years, the ATP Finals has been one of tennis’ most unforgiving battlegrounds. A place where even the greatest champions were pushed to their limits.

Defending champion Jannik Sinner will face great rival Carlos Alcaraz in Sunday's singles showpiece match at the ATP Finals in Turin, with Alcaraz having won four of their five matches this year.

After Alcaraz beat him in four sets in the US Open final, Sinner had been hugely complimentary of the refinements his rival had made to his game over the summer and felt that he needed to go up another level to match him.

Watching Jannik Sinner play tennis right now is like watching a master chef in the kitchen. Everything is precise, everything has a purpose, and the final result is just a thing of beauty.

Jannik Sinner drives Alexander Zverev to distraction with a composed performance to reach the knockout stages of the ATP Finals.

A 7 giorni dal suo rientro agli Internazionali BNL d’Italia, #Sinner lancia la Jannik Sinner Foundation per aiutare i bimbi a raggiungere i loro sogni. Jannik, stai creando un “cicinino” di hype e lo stai facendo bene… ❤️ pic.twitter.com/XeN7aSKzbi

The hard-hitting Italian and the multi-talented Spaniard met in three consecutive Grand Slam finals this year plus the championship match of the ATP Finals.