The Court of Arbitration for Sport is an international body established in 1984 to settle disputes related to sport through arbitration. Its headquarters are in Lausanne, Switzerland and its courts are located in New York City, Sydney, and Lausanne. Temporary courts are established in current Olympic host cities.
Hrysopiyi "Piyi" Devetzi is a retired Greek athlete who competed in the triple jump and long jump.
Competitors at the Olympic Games have used banned athletic performance-enhancing drugs.
Antonio David Jiménez Pentinel is a Spanish long-distance runner specialising in the steeplechase.
Ahmed Ibrahim Baday is a Moroccan long-distance runner who specialized in the 5000 metres and cross-country running but now competes in road running competitions. He is currently banned for doping.
Hanane Ouhaddou is a Moroccan runner who specializes in the 3000 metres steeplechase. She finished fifth in at the 2006 African Championships and ninth at the 2007 World Championships.
Yahya Berrabah is a Moroccan long jumper. He is a five-time participant at the World Championships in Athletics (2003–2011) and has twice represented his country at the Olympic Games. He was the 2008 African Champion in the long jump. His personal best of 8.40 metres is the Moroccan national record.
Denis Sergeyevich Alekseyev is a Russian sprint athlete, born in St. Petersburg.
An athlete biological passport is an individual electronic record for professional athletes, in which profiles of biological markers of doping and results of doping tests are collated over a period of time. Doping violations can be detected by noting variances from an athlete's established levels outside permissible limits, rather than testing for and identifying illegal substances.
The athletics competitions at the 2012 Olympic Games in London were held during the last 10 days of the Games, on 3–12 August. Track and field events took place at the Olympic Stadium in east London. The road events, however, started and finished on The Mall in central London.
Andrés Bayron Silva Lemos is a Uruguayan track athlete. He competed in the combined events on the youth and junior levels, but has since specialized in the 400 metres and 400 metres hurdles.
Chijindu "CJ" Ujah is a British athlete, specializing as a sprinter. The lead-off runner of the Great Britain 4 × 100 metres relay team that won both the World title in 2017 and the European title in 2016 and 2018, he also won the title in the 100 metres at the 2017 Diamond League final.
Mohamad Al-Garni is a Moroccan-born Qatari middle-distance runner. He competed in the 1500 metres competition at the 2012 Summer Olympics.
Mohamed El-Hachimi is a Moroccan long-distance runner. El-Hachimi represented Morocco at the 2008 Summer Olympics in Beijing, where he competed for the men's 10,000 metres, along with his teammate Abdellah Falil. He failed to finish the race.
Zane Robertson is a New Zealand middle and long-distance runner. He won the bronze medal in the 5000 metres at the 2014 Commonwealth Games. Robertson is the Oceanian record holder for the 10 kilometres and half marathon, and New Zealand record holder for the marathon. He also holds the area best in the road 10 miles. He is currently serving an eight-year ban for breaching two World Athletics anti-doping rules.
Viktor Mikhailovich Chegin is a banned Russian racewalking coach. He was responsible for training all three athletes who swept the medals at the 2009 World Championships in Athletics: Olga Kaniskina, Valeriy Borchin and Sergey Kirdyapkin. His athletes Elena Lashmanova and Sergey Kirdyapkin won gold medals at the 2012 Summer Olympics, with Kaniskina earning a silver medal. Former and banned world record holders Lashmanova, Denis Nizhegorodov and Sergey Morozov are all coached by Chegin.
Danil Sergeyevich Lysenko is a Russian track and field athlete who specialises in the high jump. He won the silver medal at the 2017 World Championships. He is currently banned from the sport for doping violations and fraud.
Systematic doping of Russian athletes has resulted in 50 Olympic medals stripped from Russia, four times the number of the next highest, and more than 30% of the global total. Russia has the most competitors who have been caught doping at the Olympic Games in the world, with more than 150.
