With seven Canadian records to her name, Gabriela DeBues-Stafford is one of the best North American middle distance runners in the world.

Joyce Chepkirui, the women's 10,000 metres champion from the Glasgow 2014 Commonwealth Games, has had her four-year ban - which was handed out by the Athletics Integrity Unit (AIU) - upheld at the Court of Arbitration Sport (CAS).

The World Anti-Doping Agency (WADA) has published results of additional investigations into the case involving Italian race walker Alex Schwazer, which the organisation says confirm a sample collected in 2016 was not subject to any form of manipulation.

Nigerian sprinter Blessing Okagbare has been given a 10-year ban from athletics for multiple anti-doping rule breaches by the Athletics Integrity Unit (AIU).

Russia's Irina Davydova will be stripped of the gold and bronze medals she won in the 400 metres at the 2012 and 2014 European Championships after she was charged with doping by the Athletics Integrity Unit (AIU), it has been reported.

Russian high jumper Danil Lysenko has apologised to "innocent" athletes from the country who have been impacted by the fallout of his doping case as he reiterated his claim that senior Russian Athletics Federation (RusAF) officials were to blame.

The Athletics Federation of Nigeria (AFN) has denied allegations of abandoning sprinter Blessing Okagbare after she was suspended by the Athletics Integrity Unit (AIU) during the Tokyo Olympics Games for testing positive for human growth hormone.

The Athletics Integrity Unit (AIU) has issued three separate charges against Nigerian sprinter Blessing Okagbare - two related to testing positive for banned substances and one for not cooperating with an investigation.

Two coaches - who were stripped of their Tokyo 2020 Olympic Games accreditation for their involvement in allegedly forcing Belarusian sprinter Krystsina Tsimanouskaya to board a flight home to Minsk - are under investigation by the Athletics Integrity Unit (AIU).

Double Olympic gold medallist Derartu Tulu has accused Ethiopian runners of chasing “quick money” and turning to performance-enhancing drugs to help them.

Mexican race walker María Guadalupe González Romero has been banned for a further four years for tampering with the anti-doping process.

The Athletics Integrity Unit (AIU) has acknowledged the upholding of its decision to make Ukraine’s Nazar Kovalenko ineligible to compete in the men’s 20 kilometres race walk that has just concluded in Sapporo.

Nigerian sprinter Blessing Okagbare has been provisionally suspended and will miss the remainder of Tokyo 2020 after testing positive for human growth hormone.

Swiss sprinter Alex Wilson has been ruled out of Tokyo 2020 after the Court of Arbitration for Sport (CAS) reinstated a provisional suspension.