Only those who reduce the concept of “language” to the ability to express a negation — to say “no” (a Boolean negation) — can believe that tennis, music, or painting are not languages. Their codified nature (rules, techniques, equipment) and their practice make each of them endowed with a complex semantics, requiring fine-grained interpretation. Like any other language, they can yield a rich interpretation, or be reduced to a one-dimensional semantics — for example, a mere set of abstract rules. Even Rafael Nadal, in a much more practical way, warns against the risk of tennis becoming a language dominated by a handful of elements — raw power, for example — with consequences that could radically alter the balance of the game.
Nadal’s recent concern — “Tennis has hardly changed at all in terms of rules throughout its history. People are getting taller and move better. The serve has a decisive impact. If there is no rule change to limit that power, someone over two meters tall with good mobility will come, and you won’t be able to compete against them, you won’t be able to break them.” — should not be underestimated. When one of the greatest of all time speaks, it’s only right to listen. However, one must also acknowledge that Nadal himself was among the first protagonists of the paradigm shift triggered by material evolution. So is Nadal right? Partially, yes — let’s see why.
Fear of the Giants
The combined effect of higher-performing rackets, strings that enhance spin, balanced balls and surfaces, and taller yet equally agile players is clearly reflected in a key aspect of the game: the power of the serve and baseline strokes. In recent years, top serve speeds have reached and exceeded 230–240 km/h. Even more crucially, the first serve has become an increasingly decisive weapon. Patrick Mouratoglou has observed: “The serve has become so important that the players who are rising are the ones with great serves — in other words, very tall players.” Overall, stats show a gradual increase in aces in high-level matches over the past decade, indicating that a mix of improved serve technique, taller athletes, and powerful rackets is making it harder for returners to neutralize the opening shot. In parallel with equipment upgrades, professional tennis has seen a notable evolution in players’ physical attributes and athletic preparation.
The average height of top players has increased, and today, many of the best exceed 190 cm (6’3”). This trend has a direct impact on the game: taller players enjoy a geometrical advantage on serve (being able to serve at a more favorable angle over the net) and typically have more mass to generate power. Biomechanical studies confirm a positive correlation between height and serve speed: for instance, an analysis of all 2008 Grand Slam matches found statistically significant correlations between player height and both max and average serve speeds. In the ATP tour, this translates into a trend where “taller players are more likely to serve hard while keeping the ball in play,” and therefore pile up aces, as highlighted by data from 2018.
In fact, in recent years, as many as five players standing 198 cm (6’6”) or more have consistently ranked in the top 10 — unthinkable in previous eras. A recent study on thousands of ATP matches in 2022 identified age and height as two key factors for success: older (experienced) and taller players had a statistically higher chance of reaching top rankings, all else being equal. Notably, each additional centimeter in height increases the likelihood of entering the top 100 by around 11%, underlining the huge impact height (and thus serve power) has in contemporary men’s tennis.
Reaching the Ball
There’s another dimension to this — arguably more significant than serving itself. Since the early 2000s, tennis has gradually abandoned tactical variety in favor of increased athleticism, for the same reasons that serving is so critical: thanks to stiffer rackets, strings that “grip” the ball, and technology that maximizes the ability to hit hard while maintaining control and spin. It’s no coincidence that these features favored Nadal’s style: heavy topspin shots, diagonal movement, and endless rallies. In a sense, it’s modern equipment that enabled the rise of “Nadalism” as a tennis school of thought. But now that the same evolution is pushing the game to even greater extremes — with athletes serving at 230 km/h and still staying balanced in defense — an inevitable debate arises: Is it time to change something?
The objective fact is that despite the introduction of the shot clock and speed-up rules, the average duration of matches has increased by 15–25% compared to the early 2000s. According to a recent analysis by Bozděch et al. (2024), which studied 1,990 ATP matches in 2022, matches have lengthened due to the combined effect of stronger serves and more effective defenses, aided by equipment. MatchStat and Tennis Abstract data show that the percentage of Grand Slam matches lasting over 3 hours has doubled from 2003 to 2023 — proof that increased physicality has stretched the game. Moreover, Fillmore & Hall (2021) highlighted how modern rackets have changed “the skill set required to win,” shifting the emphasis from variety to endurance and baseline consistency. Today, tennis demands explosiveness, but more importantly, the ability to repeatedly execute high-intensity shots for hours.
Mouratoglou summarized it perfectly: “It’s a very physical game. You need to be explosive but also ready to play for 3, 4, 5 hours at the same pace. Equipment helps with power — but it also helps defenders.” (UTS 2023)
The result? A more intense and spectacular game in some ways, but also extremely homogeneous, where everyone more or less does the same things: big serves, solid baseline play, little room for creativity. The data backs it up: according to analyst Craig O’Shannessy (Djokovic’s strategist), rally lengths have increased, especially on surfaces once considered “fast,” like hard and grass. Even during rallies, ball speed and weight have increased. The mind is blown by the 150 km/h+ forehands and backhands of today’s players, made possible by modern gear. A lighter, stiffer racket with polyester strings allows for ultra-fast swings and efficient energy transfer to the ball. Athletic conditioning allows players to repeat these explosive shots from start to finish. Even on clay — once the realm of slow, spin-heavy rallies — we now see sudden accelerations and winners from the baseline worthy of faster surfaces. Indeed, many historical records for speed and power have been broken in the past decade. Yet defensive skills have evolved too, as exemplified by Nadal or Djokovic: modern players, thanks to their fitness and equipment (which improves control even under pressure), often manage to return shots that would have been winners in the past. The overall result is a game that is more athletic and powerful, but not necessarily shorter: yes, there are more aces and unreturnable serves, but once a rally starts, today’s returners (with incredible reflexes and equipment) can keep the ball in play and turn the tide, creating intense duels. Reaching the ball is everything — once you do, something will come off the racket.
Solutions?
The idea of eliminating the second serve or raising the net, even suggested by Mouratoglou, seems more like provocation than solution. Changing the scoring fundamentals would risk distorting the game. Rather, like in other sports, we should reexamine the equipment allowed at the professional level. It’s not a rule problem — it’s an equipment problem. As long as gear makes everything easier — power, spin, margin — the game will inevitably shift towards athleticism and a flattening of technical language: everyone plays the same. The natural evolution of this tennis is a two-meter-tall player, powerful, resilient, with enough technique to neutralize any incoming ball. Nadal knows this. But if we truly want to avoid going down that road, the solution is not in the scoring system — it’s in redefining gear limits, as done in skiing, golf, or cycling. Because even technique, like tactics, needs boundaries to remain relevant. For example, the ITF could regulate materials (as it already does, imposing limits on racket dimensions, ball pressure, etc.) if a breaking point is reached. In the past, interventions on surfaces and balls were used to compensate for rising speeds — many argue such measures are preferable to altering the scoring system. Skiing did it:
the FIS limited the length and sidecut radius of skis to prevent athletes from relying solely on carving, thus preserving technical skill. While amateurs enjoy easy, high-performance skis, World Cup skiers must master demanding equipment (with a minimum 30-meter turning radius for men’s GS).
In tennis, pros and amateurs use very similar tools, designed to “help” even imperfect shots. The point isn’t to return to wooden rackets — but to imagine more restrictive parameters on dimensions, stiffness, and string types. Today, getting to the ball is what matters most — after that, you’ll find a way to play it, especially with enlarged sweet spots and strings that restore energy generously. And even that physicality owes much to how the rest of the game has been slowed down to compensate for equipment’s ease and power.
Playing Surfaces: Homogenization and Adjustments (Different?) Surfaces
The surface — hard, grass, clay — has always been crucial for bounce and game speed variety. However, in recent decades, we’ve witnessed a homogenization of surfaces, with intentional adjustments to reduce excessive speed on fast courts and favor longer rallies. For instance, Wimbledon’s grass courts, once lightning-fast and serve-and-volley-friendly, were made denser and the soil more compact from the early 2000s, slowing the bounce. Likewise, hard courts became less slick, and super-fast indoor carpet courts have vanished due to regulations, standardizing indoor play on hard courts to reduce injury and “one-shot tennis.” According to a 2020 analysis, this gradual uniformity worked: “Surfaces have been slowed down to favor longer rallies and avoid the dull one-shot tennis of the past,” giving rise to a modern era of baseline dominance and more contested matches. Still, differences remain: grass is the fastest surface (low bounce, little friction), clay the slowest (high bounce, high friction), and hard courts are the middle ground. But the speed gap between surfaces has narrowed. Paul Annacone, ex-coach of Federer and Sampras, noted that “Most of the game now unfolds in lateral baseline exchanges,” and although grass, clay, and hard remain distinct, “the gap between grass’s lightning speed and clay’s slowness has narrowed.” Wimbledon still sees more aces than any other Slam, but fewer than in Sampras’s day (before 2001); conversely, clay now yields winners off serve and power shots, once a rarity. The evolution of materials led organizers to slow fast surfaces (and sometimes speed up slow ones via different balls or smoother coatings) to preserve balance in the game — to stop technology from erasing technical variety. This has fostered a more uniform style across all surfaces: top players now use similar strategies — big serves and solid baseline play — whether on hard, grass, or clay. In the past, many players were extreme surface specialists.
The wear and tear of the grass at Wimbledon, then and now: a sign of the game’s “evolution.”
So, dear ITF, leave the easy, powerful rackets to the overweight white-collar amateurs who like to battle it out on Sundays, and make sure professionals have difficult tools. We’d love to see fewer athletes, fewer giants, and more actual tennis players — attacking the net or defending, using one-handed backhand slices or two-handed topspins. Not people serving second balls that bounce 2.5 meters high, then running and hitting like blacksmiths.
References:
- Fillmore, I., & Hall, J. D. (2021). Technological change and obsolete skills: Evidence from men’s professional tennis. Labour Economics, 73, 102051. (Economic analysis on the effects of the introduction of graphite rackets in the 1980s, showing how they made spin and power prevalent over control) humcap.uchicago.edu .
- Bozděch, M., Puda, D., & Grasgruber, P. (2024). A detailed analysis of game statistics of professional tennis players: An inferential and machine learning approach. PLoS ONE, 19(11): e0309085. (Study on 1990 ATP matches of 2022: identifies age, height, and service statistics as key factors for high ranking) journals.plos.org).
- Vacek, J. et al. (2021). Tennis Serve Speed in Relation to Isokinetic Shoulder Strength, Height, and Segmental Body Mass in Junior Players. Journal of Functional Morphology and Kinesiology, 10(1): 57. (Biomechanical study confirming a moderate correlation between height and serve speed, while also highlighting the importance of muscular strength and specific lean mass) mdpi.com
- Newcomb, T. (2020). Tennis Racket Technology Is Way More Elaborate Than You Think. Popular Mechanics. (Overview of the latest innovations in rackets, e.g., new types of graphite fibers like M40X for greater power and expanded sweet-spot popularmechanics.com).
- Wallace, A. (2024). Order in the court: An animated look at how tennis surfaces change the game. The Washington Post (3 July 2024). (Explanatory article on the effect of playing surfaces: confirms the homogenization of surfaces over the last 25 years and the reduction of serve-and-volley in favor of baseline rallies washingtonpost.com).
- Guru, S. (2020). Breaking down the surface diversity in pro tennis tournaments. Lob & Smash/FanSided (6 June 2020). (Analysis on the evolution of surfaces: explains the removal of carpet and the slowing down of fast courts in the mid-2000s to promote longer rallies lobandsmash.com).
- Patten, G. (2025). Patrick Mouratoglou agrees with Toni Nadal as he suggests rule change to solve a big problem in men’s tennis. TheTennisGazette.com (1 April 2025). (Discussion on regulatory proposals to limit services: Mouratoglou proposes a single serve per point, complaining that today “there are too many aces” and that UTS has shown how to reduce them thetennisgazette.com).
- Majumdar, A. (2023). Verifying Rafael Nadal’s claims that Australian Open 2023 balls favor flat and big hitters. Sportskeeda (29 January 2023). (Technical verification of the Dunlop AO 2023 balls case: confirms that they lost pressure quickly and “did not take the usual spin”, favoring flat shots sportskeeda.com).
- Allied Market Research (2024). Tennis Wear Market to Reach $43.8 Billion by 2034. GlobeNewswire Press Release (18 September 2024). (Highlights how advances in fabrics – breathability, sweat absorption, elasticity – improve performance on the field by providing comfort and freedom of movement globenewswire.com).
Follow Us