The pair are set to do battle again at the ATP World Tour Finals in Turin this week as they compete for the year-end prize but the world number one isn't concerned about the narrative that is developing between him and the Spaniard because the tournament is stacked with top players.
Sinner, who won his first two major titles in 2024, told reporters: "I always say it's very tough to talk about rivalry when we are so young.
"It was the first year where I won so many things, and for him, it was his second year doing so because he’s already won four Grand Slams.
"But now we are all very, very good players. We are great players. It's very tough to beat anyone here.
"So, it doesn't really matter who is in a group stage. Everyone deserves to be here. And then we see what comes out.
"It's going to be a great tournament – hopefully for the crowd to watch too - with some great encounters.
"But in terms of talking about the rivalry; we are too young."
Sinner won his opening match against Alex de Minaur on Sunday (10.11.24) and is staying level-headed at the tournament despite his status as favourite on home soil.
He said: "I take this tournament just like any other, and I'm very happy to be here. Hopefully, there are going to be some great matches.
"People are coming to see some good tennis and hopefully, that's the case.
"It has changed a little bit from last year, but I’m the same person in terms of how I approach these matches."