doping

American middle-distance runner Jonah Koech has been banned from the sport for three years for blood doping.

The US Anti-Doping Agency (USADA) said Koech’s doping violation was identified after “highly atypical blood values in his athlete biological passport (ABP)”.

An ABP tracks an athlete’s blood values over time to identify signs of doping even without a positive drug test.

Koech had emerged as the surprise winner in men’s 1500m at the US Outdoor Championships last year, finishing ahead of Ethan Strand and 2024 Olympic gold medallist Cole Hocker in a meet record three minutes 30.17 seconds.

His title has now been stripped after the 29-year-old accepted the ban “for the use of a prohibited substance and/or method”, USADA said.

Sources close to Mudryk say he is confident of returning to his best form, citing the work he has put in to maintain his fitness during 20 months on the sidelines.

They also point to the support Chelsea have provided throughout the process, while adhering to the restrictions imposed by his suspension and respecting the legal proceedings.

The Ukrainian received backing from the club from afar, while also being given the space to navigate what those close to him describe as an extremely difficult period.

Under the terms of the suspension, Mudryk was unable to access Chelsea‘s training ground or work with club staff. His only known public interaction with members of the first-team squad came at the Conference League final celebrations in May 2025.

To maintain his fitness, Mudryk paid for private coaching and hired goalkeepers for individual sessions while using a pitch at non-league club Uxbridge FC in London. He also organised a training camp in Austria, with videos from those sessions showing him scoring goals and taking part in attacking drills.

However, those close to Mudryk acknowledge there is no substitute for training and competing alongside elite players on a daily basis. Mudryk is understood to be realistic about the challenge ahead, but believes he can overcome it.

Chelsea are prepared to provide a pathway back into professional football. Whether that involves reintegration into the first team, a loan move – potentially involving sister club Strasbourg – or a permanent transfer remains to be seen.

Whatever the outcome, the resolution of the case represents a significant moment for Mudryk. He now has the opportunity to resume his career and determine what the next chapter looks like.

Having joined Chelsea in one of the most closely watched transfer sagas of 2023, his story at Stamford Bridge is not over yet.

To put it simply, the testing could help to combat micro-dosing. This is where tiny amounts of performance-enhancing drugs are ingested but are in and out of the rider’s system within a few hours, leaving only a short window for detection.

If a rider knows they have a seven-hour window where they are not normally tested, some believe it could be an opportunity to micro-dose.

Vaughters said: “If you introduce a low enough dose of a peptide hormone, the clearance time can be four hours. If you take it at 11pm, it’ll be out of the system at 3am, so it makes a difference.”

He added testing technology is evolving quickly but, where riders and teams push the boundaries, doping is always going to be a risk factor.

On night testing, he added: “It sucks if it happened all the time – but it’s happening once or twice a year. Listen, it’s a great deterrent. One night of lost sleep; lose a little sleep – gain a lot of credibility.”

Generally, the days when riders boosted blood values using first EPO and then moved on to blood transfusions (which is why the night-time hotel room is such a taboo backdrop in cycling) are thought to have largely gone from the top of the sport.

Since the 1990s and decade from 2000, when the disgraced once seven-time winner Armstrong tricked the world into thinking he was clean when dominating the sport, the athlete biological passport (ABP) used by Wada is sophisticated enough to pick up seemingly all inconsistencies recorded.

There have been cyclists banned recently but no high-profile names.

The sport’s lower-tiers frequently has seen riders busted for being tempted back to EPO and human growth hormones.

The ITA told BBC Sport: “Due consideration has been given to minimise as much as possible the impact testing activities have on riders.

“However, the ITA, on behalf of the UCI, has the responsibility to ensure the effectiveness of the cycling anti-doping program and the integrity of cycling races.

“As such, effective testing must, in limited and justified circumstances, be capable to occur outside standard daytime hours.”

Kibiwott Kandie initially faced an eight-year ban split evenly across two violations, but received a one-year reduction.

Former half-marathon world-record ‌holder Kibiwott Kandie has been banned for seven years by the ⁠Athletics Integrity Unit (AIU) ⁠for two anti-doping violations, the body has said.

The 30-year-old Kenyan, a 2022 Commonwealth Games bronze medallist, was provisionally suspended in ⁠March 2025 for refusing to provide a sample and was later charged with an additional violation of tampering or attempted tampering with doping control.

“This ⁠case serves as a reminder that no athlete is above the rules in the sport of athletics. If an athlete refuses a test, it places the integrity of the sport at risk,” AIU head Brett Clothier said in a ‌statement on Thursday

“The AIU has a strong forensic capability and will thoroughly investigate such cases to ensure the truth comes out,” he added.

Kandie, who initially faced an eight-year ban split evenly across the two violations, received a one-year reduction after accepting the sanctions early.

His ban is backdated to March 14, 2025, the date of his provisional suspension, and ⁠will run until March 13, 2032, when he ⁠will be 36.

On March 1, 2025, Kandie delayed and ultimately refused an out-of-competition test at his home in Kenya, citing an urgent payment before leaving despite being warned of ⁠the consequences.

AIU analysis of his phone and financial records showed multiple calls and payments linked to a ⁠nurse, with 11 transfers identified in the 12 ⁠months prior to the test, after coordination with the Anti-Doping Agency of Kenya.

Kandie’s initial explanations for refusing to provide a sample were later found to be false, while Kenyan authorities ‌confirmed that documents he submitted were fake.

Kandie, a three-time Valencia Half Marathon champion, set a then-world record of 57:32 in 2020 and ‌remains ‌the third-fastest man in history over the distance, with two of the six quickest performances of all time.