One statistic from Carlos Alcaraz’s 2025 season really stands out more than any other

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Carlos Alcaraz recorded what may go down as one of the greatest seasons of his career in 2025.

The Spaniard ended the year as the world number one, finishing with an impressive record of 71 wins to just nine losses.

Alcaraz won two Grand Slam titles this season, triumphing at Roland Garros in June before clinching his second US Open crown in September.

At just 22 years of age, he has already matched the major tallies of both Boris Becker and Stefan Edberg, and has now won 24 tour-level titles altogether.

Throughout the season, Alcaraz’s statistics have been simply jawdropping, but there is one that stands out more than any other.

The much-improved area of Carlos Alcaraz’s game in 2025

Alcaraz’s game has been taken to new heights in 2025, particularly with a shot that had perhaps been a weakness in previous years: his serve.

The six-time major champion’s serve was by no means poor before in seasons gone by, but there was certainly room for improvement.

Like all great players do, Alcaraz has turned a weak point into one of his great strengths, and the numbers back it up.

Since January, Alcaraz has fired an astonishing 463 aces past his opponents; the most he has tallied in a season by far, and up from 265 in 2024.

As well as his ace total, Alcaraz finished 10th on the tour in serve rating, which takes into account first serve percentage, first and second serve points won percentage, percentage of service games won, average aces per match, and average double faults per match, according to the official ATP statistics.

He scored a serve rating of 285.8, just behind the likes of big servers Ben Shelton and Reilly Opelka, who tallied 287.8 and 293.7, respectively.

Alcaraz also had the third-highest percentage of second serve points won with 56.8%, trailing only Alex de Minaur and his rival, Jannik Sinner.

Carlos Alcaraz improvements are necessary for his rivalry with Jannik Sinner

Alcaraz’s rivalry with Sinner produced some magnificent matches in 2025, and while fans are eager for a third star to compete with them at some point, they are still keen to see the ‘new two’ clash again and again.

The head-to-head was looking slightly one-sided at one point this season, with Alcaraz taking a 10-5 lead after winning the US Open.

Sinner got one back at the ATP Finals, which was a credit to the improvements he had made since losing at Flushing Meadows, especially the increase in his game’s variety.

For both stars to keep up with each other, they will need to keep adding weapons to their game, which is exactly what Alcaraz has done with his serve this year.

The two keep getting better, and while the rest of the tour will try to close the gap on them in 2026, that gap may just continue to get wider.