6.4 — Athletics, Tennis and the Measured Sports

Sports where the opponent is a number. Which makes them the only ones where you can ask whether human performance has a ceiling, and get a partial answer.

Running

Why was the four-minute mile such a barrier?

Because it sat just out of reach for a generation, and there was a widespread belief that it was physiologically impossible.

The record had crept down through the 1930s and 40s and stalled around 4:01. Roger Bannister ran 3:59.4 at Oxford on 6 May 1954, paced by two friends, on a cinder track, having done his training in lunch breaks from medical school.

The part worth knowing is what happened next. John Landy broke it 46 days later. Within three years, sixteen more runners had. Nothing about human physiology changed in seven weeks.

The usual reading — that the barrier was psychological — is right but incomplete. Bannister's run also demonstrated a method: even pacing, a deliberate pacemaking strategy, and interval training rather than steady mileage. Other runners copied the technique, not merely the belief.

The mile record now stands at 3:43.13, set by Hicham El Guerrouj in 1999 and unbroken for over twenty years.

Are athletics records still improving?

In most events, barely, and that is itself informative.

The 100 metres record has moved from 9.95 in 1968 to 9.58 in 2009 — about four per cent in forty years, and nothing since. Several field event records from the 1980s still stand, many of them set by athletes from countries with state doping programmes, which is why they are unlikely to fall soon.

Marathon running is the exception, and it has improved substantially in the last decade for reasons that are partly technological. The 2019 sub-two-hour run by Eliud Kipchoge was an organised exhibition with rotating pacemakers and is not a ratified record; his ratified record of 2:01:09 and Kelvin Kiptum's 2:00:35 in 2023 are.

The technology is the argument. Shoes with a curved carbon plate embedded in a thick compliant foam midsole were shown in independent testing to improve running economy by around four per cent, which at elite level is enormous. World Athletics responded by regulating stack height and plate count rather than banning them, which is a judgement that the shoes are equipment rather than doping — and the same judgement had to be made about full-body swimsuits, and went the other way.

Why do sprinters from some regions dominate?

The honest answer is that the reasons are partly understood and often overstated.

The pattern is real and narrow. Almost all elite male 100 m sprinters of the last forty years have West African ancestry, and a very large share of elite distance runners come from a small number of highland communities in Kenya and Ethiopia — the Kalenjin in Kenya's Rift Valley in particular.

The proposed explanations are several and none is sufficient alone. Physiological work has found population-level differences in muscle fibre distribution and limb proportions, but the effect sizes are small relative to individual variation. Altitude training from childhood is a genuine advantage for distance running, and the Rift Valley communities live at 2,000 metres and above. So is running to school, and a culture where the sport is the visible route out of poverty, and a dense local competitive structure where thousands of runners are training together.

The reason to be careful is that this is the area where sport is most often used to smuggle in claims about race. The correct statement is that success is concentrated in specific communities rather than in broad racial categories, that social and environmental factors are large and demonstrable, and that genetic factors are plausible and not well characterised.

What is the difference between the sprints, and why do they run in lanes?

100 m is entirely straight and is decided by reaction time, acceleration and top speed maintenance — elite sprinters reach maximum velocity around 60 metres and are decelerating by the finish. 200 m includes a bend, so runners in outer lanes have less curvature and are given a staggered start so every lane covers the same distance. 400 m is a full lap and is the most physiologically brutal of the sprints, because it exceeds what the body can supply anaerobically and the last 100 metres is run in severe acidosis.

Lanes exist to prevent contact and to make the distances equal. The stagger is calculated so that the outside of the track's total length matches the inside, and lane assignment is not neutral — the middle lanes are generally considered best, because you can see most of your rivals, and they are allocated to the fastest qualifiers.

A false start now means immediate disqualification. The threshold is 0.1 seconds after the gun, on the reasoning that a human cannot react faster than that, so anything quicker must be an anticipation. That number has been challenged by researchers who have measured faster reactions.

Swimming

Why were the full-body swimsuits banned?

Because they made the sport a technology competition, and the evidence was overwhelming.

The polyurethane suits introduced from 2008 compressed the body into a more streamlined shape, trapped air for buoyancy, and repelled water. At the 2009 World Championships, 43 world records were broken. In 2008 and 2009 together, over 130 fell.

FINA banned non-textile suits from 2010 and limited coverage. Many of the 2009 records still stand, which is the clearest possible demonstration of the effect, and swimmers spent years chasing times set in equipment they are no longer allowed to wear.

The contrast with running shoes in the same era is worth noting: the same governing-body question, decided differently.

Why are swimming records broken so much more often than running records?

Because swimming is far more technique-dependent and far less mature.

Running is a natural human motion that has been optimised for a century. Swimming is not natural, and the sport keeps discovering things: the underwater dolphin kick off each wall was exploited seriously only from the late 1980s, and is now restricted to 15 metres because swimmers were finding it faster than surface swimming and races were turning into a series of submerged kicks.

Pool design also changes. Deeper pools, better lane ropes that absorb waves rather than reflect them, and wider gutters all reduce turbulence, and a modern competition pool is measurably faster than one from the 1970s.

Tennis

Why is tennis scoring 15, 30, 40?

Nobody is certain, and the leading explanation is a clock face.

The most common account is that a clock dial was used to keep score, moved a quarter turn per point — 15, 30, 45, game. Forty-five was shortened in speech to forty, and the deuce rule then required moving to 50 for the advantage point, which fits the dial.

An alternative explanation involves French jeu de paume and the physical distances players moved on court after each point. Neither is documented from the period, and the honest position is that the origin is lost.

Love for zero is most plausibly from the French l'œuf, an egg, for the zero shape — the same joke as a cricket duck. The alternative is the English phrase "for love", meaning for nothing.

Deuce is from à deux le jeu, meaning two points needed to win.

What is a Grand Slam, and why are the four surfaces different?

The four majors are the Australian Open (hard court, January), Roland Garros / French Open (clay, May-June), Wimbledon (grass, June-July) and the US Open (hard, August-September). Winning all four in a calendar year is a Grand Slam, achieved in singles by only five players.

The surfaces are historical accident preserved deliberately, and they change the sport substantially.

Clay is slow and the bounce is high, so rallies are long, sliding is possible, and defensive players and heavy topspin are rewarded. Rafael Nadal's fourteen French Open titles are the most extreme surface specialisation in the sport's history.

Grass is fast and the bounce is low and unpredictable, which historically rewarded serve-and-volley. Wimbledon slowed its courts around 2001 by changing the grass variety, which is a large part of why the pure serve-volley game disappeared.

Hard courts sit in between and are what most of the tour is played on, and they are the hardest on the body — the lack of give transmits impact into knees and hips.

Why does Wimbledon insist on white?

A rule dating from the Victorian period, when visible sweat stains were considered improper, and white clothing showed them least.

It is now enforced strictly — "almost entirely white", with a limited coloured trim — and it is one of the reasons the tournament is visually distinctive on television. The rule was relaxed in one respect in 2023, permitting dark undershorts for female players, after players said the anxiety about menstruation while dressed entirely in white was affecting performance.

Other measured sports

What is a decathlon actually testing?

Ten events over two days: 100 m, long jump, shot put, high jump and 400 m on day one; 110 m hurdles, discus, pole vault, javelin and 1500 m on day two.

The scoring is what makes it interesting. Each performance is converted to points by a formula, and the formulas are calibrated so that comparable standards in different events give comparable points. That calibration is a value judgement, and it has been revised repeatedly, which means historical scores are not strictly comparable.

The events are deliberately incompatible. The shot put rewards mass and the 1500 m punishes it, so a decathlete is optimising a compromise rather than any single quality — which is why the winner is traditionally addressed as the world's greatest athlete, and why no decathlete would win a medal in any individual event.

The women's equivalent is the heptathlon, seven events over two days.

Why is Formula One a sport rather than a machine competition?

Because it is both, and the argument about the proportion is permanent.

The car matters enormously — a driver in a dominant car will beat a better driver in a poor one over a season, reliably. But the evidence that the driver matters is available in the one place the machine is held constant: the two drivers in the same team. Teammate comparisons over a season are the metric the sport itself uses, and the gaps are real and consistent.

The physical demand is also real and underestimated: cornering forces reach around 5 g, cockpit temperatures exceed 50 °C, and drivers lose several kilograms of fluid in a race while making decisions at 300 km/h.

The technical regulations are the actual competition. Teams spend enormous effort finding advantages within a rulebook designed to prevent them, and the sport's history is a sequence of innovations that were legal, dominant, and then banned — ground effect skirts, active suspension, traction control, the double diffuser, the F-duct.

What is the fastest anything gets?

A ball: a badminton shuttlecock, recorded above 490 km/h off a smash. It decelerates faster than any other projectile in sport because the feathered skirt is enormously draggy, which is why the sport is playable at all.

A served ball: tennis serves exceed 250 km/h. A struck ball in a team sport: jai alai's pelota above 300 km/h, and golf drives around 340 km/h at the clubhead-to-ball moment.

A human unaided: Usain Bolt reached about 44.7 km/h at peak during his 9.58 record — for roughly one second, around the 60 to 70 metre mark.

In water: a swimmer's fastest is around 8 km/h, which is the clearest illustration of how much drag matters. Water is about 800 times denser than air.

What comes next

The next page leaves physical sport for the games where the entire contest is inside the players' heads, and where a machine now plays better than any human ever will.