Simona Halep's Doping Ban: From Four Years to Nine Months

Timeline

1. Aug 23–28, 2022Halep takes the Keto MCT supplement on five days, according to the CAS award.
2. Aug 29, 2022Halep gives a urine sample at the US Open that later tests positive for roxadustat.
3. Oct 7, 2022Halep is provisionally suspended; the ITIA formally charges her on October 31.
4. May 2023The ITIA brings a second charge based on her Athlete Biological Passport.
5. Sep 22, 2023An ITF independent tribunal finds both violations and bans her for four years.
6. Feb 7–9, 2024CAS holds a three-day hearing in Lausanne.
7. Feb 2024Halep sues the supplement maker in New York state court, seeking more than $10 million.
8. Mar 5, 2024CAS reduces the ban to nine months, which had expired on July 6, 2023; Halep can play immediately.
9. Feb 4, 2025Halep retires after a first-round loss at the Transylvania Open.
10. Mar 3, 2025A federal judge returns Halep's supplement lawsuit to New York state court for lack of jurisdiction.

The ethical issues

• Strict liability and the risk of contaminated supplements.
• Delay: the human cost of slow anti-doping proceedings.
• Standards of proof for biological passport cases.
• Inequality of resources between athletes and anti-doping bodies.
• Reputational harm that persists after a reduced sanction.

Stakeholders

Stakeholder	Interests & obligations
The player	Her career, reputation and a fair, timely process.
The International Tennis Integrity Agency	Credible anti-doping enforcement.
Other players	Clean competition and fair treatment if they test positive.
Supplement makers	Their products and liability.
Tours and tournaments	Their star players and the sport's credibility.
Fans	Trust in results and fair treatment of players.

The case

Simona Halep won the 2018 French Open and the 2019 Wimbledon title, and spent 64 weeks as world No. 1.^[4] She arrived at the 2022 US Open as a top-10 player.^[4] A urine sample she gave there on August 29, 2022, tested positive for roxadustat, an anti-anemia drug that stimulates red blood cell production.^[1][3] She would play only six more tour matches.^[4]

Background

The International Tennis Integrity Agency (ITIA) provisionally suspended Halep on October 7, 2022, and formally charged her on October 31.^[3][9] In May 2023, the ITIA brought a second charge, alleging that irregularities in her Athlete Biological Passport (ABP), particularly a blood sample from September 22, 2022, showed use of a prohibited substance or method.^[1][3] Three experts who assessed 51 valid blood samples each concluded there was “likely doping.”^[3] Halep’s defense attributed the irregularities to factors including blood loss during surgery and periods without training.^[3]

On September 22, 2023, an ITF Independent Tribunal found both violations and banned her for four years.^[1] Its reasoned decision shows how close the first round was. The tribunal accepted that Halep had proved, on the balance of probability, that her Keto MCT supplement was contaminated with roxadustat. But it concluded that the contaminated supplement “could not have been the sole source” of the amount detected, so there was “another source of either all or most” of the roxadustat. Because she could not show that her use from that other source was unintentional, the default four-year sanction applied.^[5] The tribunal also found that her ABP values were not significantly affected by “detraining,” one of her explanations.^[5] Halep appealed to the Court of Arbitration for Sport (CAS), asking for a sanction no longer than the time she had already served. The ITIA cross-appealed, seeking four to six years.^[1]

The rules and governance

Under the Tennis Anti-Doping Programme, it is “each player’s personal duty to ensure that no prohibited substance enters their body,” and players are responsible for any substance found in their samples.^[1] Halep accepted that the roxadustat finding was a violation but argued it was not intentional and came from contamination.^[1] For the ABP charge, the ITIA had to prove a violation to the panel’s “comfortable satisfaction.”^[1]

After intensive pre-hearing work and a three-day hearing in February 2024, the CAS panel ruled unanimously on March 5, 2024.^[1]

On the roxadustat charge, the panel found that Halep had established “on the balance of probabilities” that the substance came from a contaminated supplement she used shortly before the test, Keto MCT, and so the violation was not intentional. She bore “some level of fault or negligence,” because she “did not exercise sufficient care” with the supplement, but “no significant fault or negligence.”^[1]

On the ABP charge, the panel, unlike the first tribunal, considered a private blood sample taken on September 9, 2022, in connection with surgery. Those results and Halep’s public statements that she did not plan to compete for the rest of 2022 affected the plausibility of the doping scenarios relied on below. The panel was “not comfortably satisfied” that a violation had occurred, and dismissed that charge.^[1]

The panel imposed nine months, starting October 7, 2022, which had expired on July 6, 2023, before the appeals were even filed. It disqualified her results from August 29 to October 7, 2022.^[1] Because the period had already expired, CAS issued its operative decision promptly, with the reasoned award to follow.^[1][2] The ITIA published the full reasoned award on October 10, 2024, seven months later.^[8] Halep received 20,000 Swiss francs from the ITIA toward her costs.^[3]

Inside the award

The reasoned award, published in October 2024, explains how the CAS panel reached a different result on the same evidence. The panel was chaired by Annabelle Bennett, a Sydney barrister, with Jeffrey Benz and Ulrich Haas.^[9] Because the appeal was heard de novo, the panel decided the case afresh rather than reviewing the first tribunal’s reasoning for error.^[9]

The supplement. According to the award, a member of Halep’s support team recommended a sugar-free collagen product, Keto MCT, in August 2022. The product reached Halep in New York on August 23, and she took 10 grams of it on five days between August 23 and 28. Its listed ingredients were checked, and none was banned.^[9] The ITIA disputed contamination. It noted that two WADA-accredited laboratories, in Montreal and in Utah, had been unable to detect roxadustat in the product despite repeated attempts. It also argued that the amount Halep said she took could not account for the concentrations in her urine, which the Montreal laboratory had estimated at about 289 pg/mL in the A sample and 529 pg/mL in the B sample.^[9] The panel noted that those estimates were disputed, since the test for a non-threshold substance like roxadustat is only qualitative.^[9]

The first tribunal had said that if it had to drop one of its two findings (that the supplement was contaminated, and that contamination could not explain the concentration), it would drop the contamination finding. CAS reasoned the other way. It accepted that the supplement was contaminated and called for “a degree of common sense.” Any mismatch in concentrations, it said, would require Halep to have taken roxadustat from a second source, and “there is no evidence why, or reason advanced for, the Player to have consumed Roxadustat from two separate sources.”^[9] Relying on an earlier CAS case that called such a coincidence “far-fetched,” the panel concluded that the roxadustat “came from the Keto MCT product that she consumed that was contaminated.”^[9]

The passport. Halep had been in the tennis passport program since 2013, and 57 blood samples had been collected from her.^[9] The panel accepted that her private September 9, 2022, sample did not strictly meet the international standards and so could not simply be added to her passport. It gave the results “material weight” anyway, because the sample was taken for a scheduled medical procedure before she knew of either the positive test or any passport abnormality.^[9] The chronology mattered too. Halep had lost in the first round of the US Open on August 29, 2022, and had immediately decided to have nasal surgery and stop playing for the year. The panel found “no logical reason” for her to use blood-boosting agents after that. The ITIA’s doping scenarios were “possible,” it said, but not “plausible.”^[9]

The fault. The panel did not find Halep blameless. It noted that the supplement was new to her, had been obtained at short notice, and had not been certified by an independent tester, although certified collagen alternatives appeared to exist. It also noted that she did not consult the academy doctors available to her. The panel added that a WTA webpage dated 2017 warned players about contaminated supplements. It wrote that checking a label is “merely a threshold requirement,” and that Halep, “an elite and experienced athlete, willingly assumed the risk of using an uncertified substance.” Nine months, it concluded, “appropriately reflects the Player’s degree of fault.” Halep’s own appeal brief had proposed four months.^[9]

The lawsuit

While the appeal was pending, Halep took the contamination argument to civil court. In February 2024 she sued the Canadian company that made the Keto MCT supplement, Quantum Nutrition, which trades as Schinoussa Superfoods, in New York state court in Manhattan. She sought more than $10 million in damages plus punitive damages, alleging that the product contained undisclosed roxadustat and that the company’s negligence and false claims that it was legal had harmed her career and caused her humiliation.^[6] The company’s founder had told a Canadian newspaper months earlier that Halep was looking for a scapegoat and that his company was being made “the fall guy.”^[6]

The suit later named the packager and an ingredient supplier as well. In February 2025, Quantum moved it to federal court in Manhattan. On March 3, 2025, the federal judge sent it back: the plaintiff lives in Romania and all three named companies have their principal places of business in Canada, so the federal court lacked jurisdiction over a dispute only between foreign parties.^[7]

Reactions

Halep said: “My faith in the process was tested by the scandalous accusations that were levelled against me, and by the seemingly unlimited resources that were aligned against me.”^[3] The ITIA’s chief executive said that “an essential element of the anti-doping process is a player’s ability to appeal,” and that the agency respected the outcome.^[2]

Aftermath

Halep was free to play immediately and returned to the tour in March 2024.^[2][4] She played just six matches through early 2025 and won only one.^[4] She announced her retirement on February 4, 2025, after a 6-1, 6-1 loss at the Transylvania Open, her fifth tournament since returning. She had recently cited a knee injury.^[4] A BBC correspondent observed that “sporting careers can be very fragile.”^[4]

The core dilemma

Strict liability keeps anti-doping enforceable, and biological passports help catch sophisticated doping. But contamination is real, passport cases depend on contested expert interpretation, and appeals take time. Halep was ultimately found to deserve nine months, but spent about 17 months out of the sport. How can anti-doping be strict, fair and fast?

Competing values

• Strictness vs. fairness: firm rules against case-specific fault.
• Thoroughness vs. speed: careful proceedings against timely justice.
• Expert evidence vs. individual explanation: passport profiles against medical context.
• Institutional power vs. individual resources.

Strongest arguments

For the system as it worked: the process corrected itself. An appeal with full evidence led to a fair result, and the ITIA respected it. Strict liability correctly held Halep responsible for some fault.

Against the system as it worked: an athlete ultimately found to deserve nine months served about 17, and her career effectively ended. Delays and the costs of defending a case can cause irreversible harm.

For reform: set firm timelines for hearings, provide funding or legal aid to athletes, and improve certification of supplements.

Applying the frameworks

Justice

A justice lens asks whether the process was fair: the time taken, the standards of proof, and the resources available to each side. It notes that the final sanction was proportionate, but the time served was not.

Rights

A rights lens focuses on athletes’ rights to a timely hearing and to be presumed innocent of intentional doping, balanced against clean competitors’ rights.

Care

A care lens asks what anti-doping bodies owe athletes during long proceedings, including clear communication and support, and how a career and reputation can be protected when charges are later reduced.

Walk it through: the Simple Decision Model

1. Spot the issue. You lead an anti-doping agency reviewing the Halep case. Stakeholders include athletes, tours and fans. Less visible are lower-ranked players without resources to defend themselves. The codes are the World Anti-Doping Code and the Tennis Anti-Doping Programme.
2. Gather facts. How long did each stage take? What caused the delays? How did the two tribunals treat the same evidence? Beware hindsight bias.
3. Test options. (a) Keep the process as is. (b) Set binding deadlines for first-instance hearings. (c) Add deadlines plus legal-aid support for athletes.
4. Check codes and law. Check the Code’s provisions on provisional suspensions and hearings, and athletes’ rights.
5. Decide and document. Record the reforms and why.
6. Communicate and follow up. Publish timelines and outcomes, and review them annually.

What’s settled and what’s contested

• Settled: the CAS rulings on both charges; the nine-month sanction; Halep’s return and retirement.
• Contested: whether the first tribunal or CAS read the passport evidence correctly; how much fault a contaminated supplement should carry; whether delays were avoidable.

Why this case matters

Halep’s case shows how anti-doping’s strict rules interact with contamination, passport science and slow procedures. It is a case study in fairness, timeliness and the fragility of athletic careers.

Key terms

Strict liability

The anti-doping principle that athletes are responsible for any prohibited substance in their bodies, whether or not they meant to take it.

Due process

Fair procedures before a sanction: notice, a chance to respond, an impartial decision-maker and a right of appeal.

Integrity

A commitment to honesty and ethical principle in competition and administration, including when nobody is watching.

Trust

The public’s belief that what they are watching is real. Integrity failures are ultimately failures of trust.

Duty of care

The responsibility of coaches, organizations and institutions to protect the health, safety and well-being of those in their charge. It is not a license for total control.

Definitions from the Ethics Cases glossary.

Discussion questions

1. Halep was suspended for about 17 months before CAS ruled that nine months was the right sanction. How should anti-doping systems reduce such delays?
2. CAS found Halep bore some fault for not exercising sufficient care with a supplement, but no significant fault. What level of care is reasonable for elite athletes?
3. Halep criticized the 'seemingly unlimited resources' aligned against her. Is there an inequality of arms in anti-doping cases? How could it be addressed?
4. After the reduction, Halep played only a handful of matches before retiring. Who, if anyone, is responsible for that outcome?

Sources

1. CAS upholds the appeal filed by Simona Halep and reduces her period of ineligibility from 4 years to 9 months (media release, 5 March 2024) — Court of Arbitration for Sport
2. Court of Arbitration for Sport partially upholds Simona Halep appeal — International Tennis Integrity Agency
3. Simona Halep: Doping ban reduced for former Wimbledon champion — BBC Sport
4. Former Wimbledon champion Halep announces retirement — BBC Sport
5. ITIA v Simona Halep, decision of the Independent Tribunal under the Tennis Anti-Doping Programme 2022 (Sept. 11, 2023, redacted) — International Tennis Integrity Agency
6. Simona Halep sues supplements company she claims caused positive test that led to doping ban — ABC News (Australia), with Reuters
7. Halep v. Quantum Nutrition Inc. dba Schinoussa Super Foods et al., No. 1:25-cv-01416 (S.D.N.Y.), docket and remand order — PacerMonitor (US District Court records)
8. Full decision in the case of Simona Halep v ITIA (Oct. 10, 2024) — International Tennis Integrity Agency
9. CAS 2023/A/10025 Simona Halep v. ITIA & CAS 2023/A/10227 ITIA v. Simona Halep, Arbitral Award (redacted) — Court of Arbitration for Sport (via International Tennis Integrity Agency)