Famous Tennis Expert Hopes Carlos Alcaraz and Jannik Sinner Don’t Commit a Similar Mistake as Roger Federer and Rafael Nadal
Carlos Alcaraz and Jannik Sinner currently hold all of the four Grand Slam titles.

Jannik Sinner, Carlos Alcaraz, Roger Federer and Rafael Nadal (via The Tennis Letter)
Famous tennis expert Jose Moron has shown approval of the fantastic rivalry developing between Jannik Sinner and Carlos Alcaraz. The duo played one of the greatest Grand Slam finals of all time at Roland Garros, with Alcaraz prevailing after five hours and 29 minutes.
Moron hopes that the fans of Sinner and Alcaraz shouldn’t do what Roger Federer and Rafael Nadal fans did. The Portuguese expert believes that Federer Nadal fans couldn’t stand each other for almost a decade before coming to terms with each other’s importance. Sinner and Alcaraz fans need to be aware of that.
Nadal and Federer fans had to give themselves more than 10 years to put aside their quarrels and insults. Italians and Spaniards say anything and everything about Sinner and Alcaraz. They don’t understand that one wouldn’t be the same without the other. They should push each other to improve and motivate each other to work harder, they should respect each other, which these fans don’t do. Let’s hope it doesn’t take them another 10 years to realize that this is what it’s all about: enjoying the journey.
The rivalry between Sinner and Alcaraz stands at 8-4 with the Spaniard winning their last five encounters. Two of those matches have come in Roland Garros, with Alcaraz winning both of those encounters in five sets.
Los aficionados de Nadal y Federer tuvieron que darse más de 10 años para dejar las peleas e insultos a un lado.
— José Morón (@jmgmoron) June 11, 2025
Terminaron abrazándose, viendo cómo sus dos ídolos se despedían de nosotros.
Entendieron que uno no era lo mismo sin el otro. Que se pelearon entre ellos… pic.twitter.com/Ir7r6RhuqR
They are considered the next big rivalry after Federer and Nadal. The Swiss man retired in 2022, whereas the elder Spaniard bid farewell last year at the conclusion of Spain’s Davis Cup tenure.
Can Jannik Sinner decode Carlos Alcaraz?
Jannik Sinner was just one point away from winning the French Open final, leading by two sets with Championship points in hand. It seemed like he was finally going to break past Carlos Alcaraz, a rival who had recently held the upper hand.
Although they are close in age and have risen through the ranks together, Sinner had dominated their early matchups. He had won four of their first six meetings across all surfaces, establishing himself as a real contender.

However, since 2024, the momentum has completely shifted. Alcaraz has won their last five matches, including three finals and two semifinals. In four of those, he came back from a set down. His ability to perform under pressure has given him the mental advantage. The French Open final, where Sinner failed to convert his championship points, only reinforced Alcaraz’s dominance in their growing rivalry.
Many believe this rivalry will define the future of men’s tennis. While Novak Djokovic is still a threat, Alcaraz and Sinner are seen as the top two. Between them, they’ve held the No. 1 ranking for 73 weeks since 2022. Yet for a rivalry to truly stand out, victories need to go both ways. Right now, Alcaraz’s winning streak is threatening to turn their matchup into a one-sided affair.
Sinner has yet to beat Alcaraz during any of his three Grand Slam victories. In contrast, Alcaraz has eliminated Sinner in three of his five title runs. Tennis history shows that even the greatest players have gone through phases of dominance and recovery—whether it was McEnroe vs. Connors or Djokovic vs. Nadal. At 23, Sinner still has time to shift the balance, but he must do it soon if this rivalry is to become one for the ages.
Carlos Alcaraz’s potential weakness identified
Carlos Alcaraz may have claimed the French Open title and emerged as a strong successor to the Big Three, but his serving stats show room for improvement. An ATP leaderboard analyzing service performance over the past 52 weeks ranks him only 16th. This list evaluates players based on several factors, including first and second serve points won, aces, double faults, and service games won.

While Alcaraz matches top players in first serve percentage, his average of 4.9 aces per match is notably lower than rivals like Jannik Sinner and Alexander Zverev, who average over 8. In first serve points won, he also falls short, recording 72.5%, compared to Sinner’s 78.7% and Zverev’s 76.8%.
His second serve is slightly more reliable, winning 57% of points, better than Zverev’s 55.3% but not quite as strong as Sinner’s 59.1%. In terms of service games won, Alcaraz again lags behind, holding 85.3%, whereas Zverev is at 89.1%, and Sinner leads with 91.2%. These gaps highlight a key area for growth in his game.
Leading the serving chart is Giovanni Mpetshi Perricard with a score of 299, thanks to a massive 16.9 aces per match—though it comes with 5.2 double faults on average. Matteo Berrettini ranks second, balancing decent ace numbers with a strong double fault rate of just 1.5, better than most in the top 10.