Jannik Sinner and Roger Federer never had the opportunity to play against each other.
Sinner made his ATP Tour debut in 2019, the year when Federer reached his last Grand Slam final at Wimbledon.
Federer has been officially retired from tennis since 2022, while Sinner has become the best player on the ATP Tour.
After Sinner defended his Wimbledon title earlier this month, former top 10 player John Isner has predicted if he would have beaten prime Federer.
John Isner backs prime Roger Federer to beat Jannik Sinner
In the latest edition of the Nothing Major Podcast, Isner, Sam Querrey and Steve Johnson answered some fan questions.
One of those questions related to a fantasy Laver Cup, which was labelled ‘ponytails vs gingers’ as Federer, Lleyton Hewitt and Pat Rafter were put against Sinner, Jim Courier and Rod Laver, assuming all players are in their prime.
Isner, Querrey and Johnson were all in agreement that a prime Federer would beat Sinner.
What would have happened if Carlos Alcaraz and Jannik Sinner played at the same time as Roger Federer and Rafael Nadal?
They then also agreed that Courier would claim victory over Hewitt, but there was more of a split for the final matchup.
Isner and Johnson both backed Rafter to beat Laver, but Querrey was on the side of the 11-time Grand Slam champion.
How do Jannik Sinner and Roger Federer’s careers compare at the same age?
Due to the success he has already achieved in his career, Sinner continues to be compared to the likes of Federer, Rafael Nadal and Novak Djokovic.
Sinner is approaching his 25th birthday, having already won five Grand Slam titles and been world number one for 81 weeks and counting.
These numbers still trail Federer, who had already won eight Grand Slam titles before his 25th birthday.
| Jannik Sinner (24) | Roger Federer (Before turning 25) | |
| Weeks as No.1 | 81* | 131 |
| Titles won | 30 | 39 |
| Grand Slam titles won | 5 | 8 |
| Masters 1000 titles won | 10 | 10 |
One of the only statistics Sinner matches Federer in at this age is Masters 1000 titles won, having both won 10 each.
Sinner has an opportunity to overtake Federer before his 25th birthday with the Canadian Open taking place before then.
