Managed, not healed.

■ Where this starts

Three weeks ago, the physician on our own medical partnership said this to a wire service.

“We’re losing the battle overall despite the advances in sports medicine.”

Dr Neeru Jayanthi, Director of the Tennis Medicine Program, Emory Healthcare · to AFP, 31 August 2026

Emory Sports Medicine is INTENNSE’s healthcare provider, and Jayanthi is the physician named in that partnership. He is also one of the people who writes this literature: forty-plus indexed papers, co-author of the American Medical Society for Sports Medicine and AOSSM consensus statements on early specialisation, and a co-author of the study that remains the best evidence in tennis that a governing body can lengthen careers by changing its own rules.

Otis, Hainline, Jayanthi, Stroia et al., British Journal of Sports Medicine 2022 (PMID 35396204): after the WTA introduced its Age Eligibility Rule and Player Development Programme in 1995, median career duration went from 12.1 years to 14.2. Across 811 players over 25 years.

■ The part that argues against us

Tennis is a low-injury sport, and any page that pretends otherwise deserves to lose.

On the NCAA’s surveillance system, which applies one definition across every sport, tennis sits near the bottom: 4.89 injuries per 1,000 athlete-exposures for men and 4.88 for women, against 5.30 for men’s basketball, 7.29 for football and 9.28 for wrestling. Per hour of play, elite rugby union runs roughly thirty times higher. Tennis appears in none of the high-injury groups at Rio or Tokyo.

Nor is there a clean case that injuries are rising. Across 46 years of ATP and 44 of WTA match data, mid-match retirements rose about 50% on the men’s tour from 2006 to 2014 and then returned to pre-2006 levels from 2015. On the women’s tour they did not come back down. The ATP’s own surveillance showed 1–3% year-over-year variation from 2014 to 2017. Fifty years of WTA walkover data shows a rise its authors call “slight.”

Lynall et al., BJSM 2016 (PMID 26719502); Williams et al. 2022 (PMID 34854059); Oliver et al., Eur J Sport Sci 2024 (PMID 39308146, open access); Fu et al. 2018 (PMC5825333), reporting unpublished ATP surveillance; Peña et al., Sports Health 2026 (PMID 41272923); Gescheit et al., BJSM 2017 (PMID 28687543); Kovalchik, PLoS One 2020 (PMID 32302343, open access).

■ The number underneath it

More than half of a professional season’s injury days are days the player carries on.

The Lawn Tennis Association’s physiotherapy department tracked 33 supported professionals through every day of 2023. One hundred and nine injuries, and 2,115 days affected by them — of which 972 were days lost and 1,143 were days modified. The player was still there, doing less.

It is sharpest exactly where the sport is said to be breaking down. Seventy-one per cent of shoulder-affected days were modified rather than lost. Elbow, seventy-eight. Hand, a hundred. On any given day, about one player in six was carrying something.

Nutt, McCaig & Cooper, International Journal of Sports Physical Therapy 2025;20(12):1752–1762 (PMC12673947). Lead author with the LTA Physiotherapy Department, National Tennis Centre. The paper defines “modified” against training rather than match play, so it evidences continued participation rather than measuring competing hurt directly. Thirty-three players, one nation, one year.

Two other findings say the same thing from different directions. At Wimbledon over 2007–2012, only 39% of the injuries presenting to the medical team had arisen during the tournament — 34% were sustained elsewhere before arriving, 16% were pre-existing chronic problems, and 11% were recurrences within eight weeks of recovering from the same injury at the same site. And the sport’s own medical establishment has put it in a consensus statement.

“Such a broad definition is crucial for tennis, a sport where non-time-loss problems dominate the injury and illness spectrum.”

ITF/IOC tennis consensus statement, BJSM 2021;55:9–13 · co-authored by the heads of sports medicine of the ATP and the WTA

McCurdie et al., BJSM 2017;51:607–611 (PMID 26755678, open access), 700 presentations across 33,790 player-sets. Verhagen, Clarsen, Ellenbecker (ATP), Hainline, Reid, Stroia (WTA), Pluim et al. (PMID 33082146, open access).

■ What the rulebooks price

The sport pays for matches played, and books the zero either way.

A player who is hurt has three options, and the rules put a price on all three.

• Play, and lose. Prize money arrives. “Prize money shall be paid only for matches played” — Grand Slam Rule Book J.1, and ATP Rulebook §3, and ITF World Tennis Tour Regulations XII.B, in nearly identical words.
• Withdraw before the first match. At a Grand Slam that pays 50% of first-round money — but only if the tournament doctor declares the player unfit, only twice a calendar year, and only if the player competed in a tournament in the preceding 21 days. A player who has been off injured for a month qualifies for nothing.
• Miss the event. The ranking takes a zero regardless. ATP §9.03: the result “shall count for his ranking, whether or not he participates.” WTA §II.A: a zero “which must count on her WTA Singles Ranking.” Relief on the ATP requires missing two or more consecutive mandatory events, and the sanctioned cure for a withdrawal is to enter another tournament. On both tours the Grand Slam zero cannot be relieved by injury at all.

The safety net has also been narrowed, and the change is traceable across five editions of one rulebook. In the 2019 Grand Slam Rule Book there was no recent-competition requirement. The 2021 edition added one, scoped to “players who have been out of competition for 30 days or more.” By 2023 that qualifier had been removed and the 21-day condition applied to everyone.

Protected and Special Rankings restore entry to a draw. They restore no ranking points, no prize money, and on the ATP no seeding — the rulebook says so twice, in two chapters. The WTA does grant a returning player an additional seed, but never at a Grand Slam. And Section G of the Grand Slam Rule Book lets a referee fine a player up to their entire first-round cheque for not competing to the required professional standard — listing among its factors that the player did not compete in the preceding three weeks, that they retired from their last tournament, and that they entered on a protected ranking.

ATP 2026 Official Rulebook §9.03 and §F; 2026 WTA Official Rulebook (rev. 27 July 2026) §II.A and §VIII.C; Grand Slam Rule Book §J.1 and §G, 2019, 2021, 2023 and 2026 editions; ITF World Tennis Tour Regulations 2024 §XII.

■ Who this bites

One lost match is worth $140,000 at one end of the sport and $156 at the other.

A first-round loser at the 2026 US Open took $140,000 from a record $108m purse. The same result at a Masters 1000 paid $24,335. At an ITF M15 it paid $156, and zero ranking points. A spread of roughly nine hundred times, on the same outcome.

So the squeeze is not evenly distributed, and a page that says the sport does not pay injured players will be corrected in one sentence. What holds is narrower: the money is for starting the match, and it thins to nothing below the top.

The newest peer-reviewed estimate puts break-even — costs including a support team against prize money — at a corridor around ranking 150, with only 32–34% of former top juniors finishing their careers financially positive. The figure usually quoted, 336 for men and 253 for women, is from 2013 and its own slide heading says it excludes support-team costs altogether.

Schöttl, Keiner, Metz & Kainz, Social Sciences & Humanities Open, 29 June 2026 (DOI 10.1016/j.ssaho.2026.102986, open access). ITF Pro Circuit Review — Stage One, December 2014, on 2013 data; the slide producing 336/253 is headed “what are the breakeven ranks… without support team costs,” and the 2018 Independent Review of Integrity in Tennis concedes at ¶84 that “the real break even point is likely at a higher ranking than these figures suggest.” Prize money from atptour.com 2026 tables and ITF World Tennis Tour Regulations 2024, Appendices H and J.

Prize-money inequality in tennis is more extreme than in any other major sport — a Gini coefficient of 0.87 for women and 0.68 for men. And the counter-argument deserves its own line: the ATP’s Baseline programme does guarantee a floor. In 2025 it paid $2 million across 30 players, against a $108m US Open purse, to men only. Its injury-protection pillar reached three players in 2024.

Every player on an INTENNSE roster sits on the wrong side of that line. Open Our players and the tour below and the orange rule is the break-even ranking: of the 25 ranked men on our rosters and the 20 ranked women, all 45 are outside it.

Grove, Jetter & Papps, Journal of Economic Behavior & Organization 2021;183:362–376. ATP releases of 22 August 2023 and 18 December 2024. No WTA equivalent to Baseline could be verified.

■ The other clock

The treatments that work are measured in weeks off, and the evidence on shortcuts is not ambiguous.

The foundational tendon trials all run twelve weeks, and the protocol that works opens with six weeks of no sport at all. The trials on shortcutting it say the same thing three times over.

Set those weeks against the rulebook in the section above. Twelve weeks of tendon rehabilitation is roughly three mandatory events. Six weeks non-weight-bearing is a ranking a player will not get back inside a year. Nothing in either tour’s rules is written in the units the body uses.

Jonsson & Alfredson, BJSM 2005 (PMID 16244196): “All patients ceased sporting activities for the first 6 weeks.” Coombes et al., JAMA 2013;309(5):461–9 (PMID 23385272); Smidt et al., Lancet 2002;359:657–62 (PMID 11879861); Khan et al., AJSM 1992 (PMID 1456359); Migliorini 2023 (PMID 36656423); Uppstrom 2026 (PMID 42077177).

■ On the record

The players describe the mechanism themselves, and one of them describes the format.

“Financially, there might be people that don’t have that luxury to stop a week out of their schedule and not play — the majority of us are still trying to make a living. I’ve played through many injuries, I’ve also stopped through many injuries.”

Katie Boulter, British No. 3 · BBC Sport, 6 May 2026

“I’m skipping a couple of events in order to protect my body because I struggled a lot last season… This season we will try to manage it a little bit better, even though they are going to fine me by the end.”

Aryna Sabalenka · Brisbane, 8 January 2026

Sabalenka’s sentence sits directly on the rulebook: she is describing §II.A while doing the medically correct thing. Denis Shapovalov, who had played Wimbledon with a fractured rib: “it’s going to take a couple more big guys getting hurt for the people to step in and make a change.” And in a federal complaint filed in the Southern District of New York, a named professional of thirteen years states the causal claim outright — that he has repeatedly played when not physically capable “because of the negative repercussions his career would face if he passed up the opportunity to earn prize money and Ranking Points.”

The line that describes what a team format actually changes came from a commentator watching the injury wave at Wimbledon:

“It’s so tough playing an individual sport. You can’t be subbed out, you just have to be dunked back in the deep end immediately.”

Naomi Broady · BBC, 29 June 2026

Pospisil v. ATP Tour, Inc., No. 1:25-cv-02207-MMG (S.D.N.Y.), Complaint ¶192, on named plaintiff John-Patrick Smith — an allegation in a counsel-drafted pleading rather than a spoken quote. No merits ruling has issued. The claims made by the Professional Tennis Players Association about rising arm injuries are not cited anywhere on this page: no methodology, denominator or data has been published, and the association is a litigant against the tours.

■ One season, one player

Sophie Chang played five tournaments on a fractured rib, then came to us on three injections.

Chang reached 217 in singles and 59 in doubles, won the Hamburg title in 2022 and made the third round of the US Open doubles in 2023. She left the tour after Charleston, on a protected ranking. In September she told the Yips & Giggles podcast what had happened, at length and without being asked to make it flattering.

On the rib: “I remember the day it started hurting… But the thing was then I played like five tournaments after that, like on it.” The MRI turned a possible recovery into a two-month one. Then, before our season: severe inflammation in the right hip and a disc protrusion.

“I ended up getting several injections into my hip and into my spine to be able to play INTENNSE, because I was starting to get really excited about playing that. I was like, this is something that I’ve wanted to do my whole career and I am not missing it… I flew home mid-season to get my third shot.”

Sophie Chang · Yips & Giggles, Ep. 23, 8 September 2026

She arrived not having played a singles point in a year. What the season gave her was room to manage it:

• She sat out a match and came back for the next one. “My back in the first month was kind of getting worse each match… So I sat out of the third match and then came in for the fourth again, and then I got my third injection and actually felt pretty good throughout the rest of the season.” Under tour rules there is no such thing as sitting out the third match.
• A week between matches instead of consecutive days. “Let’s say I played that first match and I had a week to like, okay, I’m going to hit some returns. It wasn’t like, oh, I got to go out tomorrow and do the same thing.”
• A coach on site. On the tour: “if I had a really terrible match, I didn’t have a coach with me or any hitting partner or anything.”
• Pay that did not depend on the result. “I actually get paid to just show up, you know, and like win or lose, you know what I’m getting.” Against the tour, where “usually means like you lose, you’re at a negative.”

And then the part that matters most, because it is the part a recovery story would leave out. She is not healed.

“I was able to make it through the season. But my plans after — like, I need to let it heal. It still does bug me sometimes and it’s not healed. Like, I got that to be able to play the season.”

Sophie Chang · same episode

She also names something the league costs her. A protected ranking is suspended only while a player is out of everything, and paid play restarts the clock — on the ATP side the rulebook is explicit that it runs from “the first tennis event, including Special Events – Exhibitions, that the player competes in.” In her words: “it actually comes unsuspended as soon as you’re playing, even in a league like INTENNSE.” Playing for us started her twelve months. That is a real cost and it belongs on the page next to everything else.

What she said about the competition itself: “Leaving the event I was like, that was the most fun I’ve ever had just in the essence of competition… it did make me want to explore being an athlete, a competitive athlete again.” In the year before, off tour, she had not missed competing at all.

Quotes verified against the episode’s caption track. Chang gives her last tour event as the Charleston Open; public records list a January 2025 event in Rome, Georgia.

■ What the format changes

A fixed season, a home city, a roster and a salary.

None of this makes tennis safer to play. It changes what a player has to give up to look after a body, which is a different claim and a smaller one.

What it does not change: the ranking a player is on leave from, the clock that starts when they take paid competition, and the tour they may want to go back to. A league cannot rewrite either tour’s rulebook. It can be the place where playing does not cost more than it pays.

■ Where the evidence stops

The things this page will not claim.

• That injuries in tennis are rising. The men’s retirement rate went up and came back down. Specific categories at the Australian Open rose more than twofold; the general claim does not hold.
• Any figure from the PTPA. The “arm injuries up 112%” number exists only in a graphic attached to a post on X, with no denominator, sample size or method published.
• That imaging shows a damaged population. It would show that whether or not anyone hurt: 64% of asymptomatic elite juniors have a lumbar abnormality.
• That continuity of medical staff improves outcomes. Intuitive, and untested — no study in any sport tests it directly.
• A number for how many professionals compete injured. No survey or study measures it. The LTA surveillance above is the closest thing that exists.
• That players were healed here. One finished a season she could not otherwise have played, and says on the record that the injury remains.

One absence is worth stating on its own. Searching the economics literature turns up work on gender pay gaps, on prize-money skew, on the effect of technology — and nothing at all on what an injury costs a professional tennis player. The sport has never measured the thing this page is about.