Carlos Alcaraz and Jannik Sinner are currently the two most successful men's tennis players born in the 21st century.
What's Next for Alcaraz and Sinner?
Mark Petchey believes their relationship will grow more fractious as their careers progress.
Petchey, the former British number one, does not think any competitors have been friends, citing Rafael Nadal and Roger Federer's rivalry as an example.
The Respect Between Alcaraz and Sinner
The respect between Carlos Alcaraz and Jannik Sinner is massive, but Petchey feels it is only a matter of time before something occurs that one of them takes issue with.
Petchey said: "I don't think any of the rivals over the years have been like mates."
Alcaraz's Recovery from Injury
Carlos Alcaraz is currently recovering from a wrist injury that will rule him out of Wimbledon 2026.
Petchey thinks the reset will not be so bad for Alcaraz, and having this time away will rekindle all the passion that he needs for the game.
And Alcaraz will come in fresher than ever, with acres of room to make things happen for himself.
The Future of Alcaraz's Career
Do I think he's going to have a Novak Djokovic-style career? Probably not, but I don't think he needs to, according to Petchey.
Alcaraz is so young, and he's going to give us enough entertainment, with enough to achieve in his career.