Jessica Ennis-Hill's coach hit out at UK Athletics, suggesting they may have been compromised by a lucrative sponsorship deal with Nike in their decision to stand by Mo Farah’s coach Alberto Salazar.

The credibility of Alberto Salazar’s defence against doping allegations has been further undermined by an interview he gave about a controversial incident involving Justin Gatlin in 2006.

MATT HUGHES - SPECIAL REPORT: During the years since Sir Mo Farah missed two drugs tests, his memory does not appear to have improved.

RIATH AL-SAMARRAI IN DOHA: There are growing doubts over Neil Black's future as the performance director of UK Athletics after he refused to rule out resigning after the Alberto Salazar scandal.

EXCLUSIVE: The extent to which Mo Farah's controversial former coach Alberto Salazar left the Briton exposed to potential embarrassment is revealed.

Sir Mo Farah faces a spicy showdown with former training partner Galen Rupp and controversial ex-coach Alberto Salazar after confirming he will run the Chicago Marathon on October 7.

RIATH AL-SAMARRAI: The explosive development follows a four-year investigation by the US Anti-Doping Agency into the work done by the coach, who runs the Nike Oregon Project.

The ruling spoke of Salazar using his two sons as guinea pigs in June 2009 as a means of establishing how much testosterone gel could be applied before breaching the legal limits.

The world of athletics was rocked on Tuesday when the coach who led Sir Mo Farah to his Olympic gold medals was banished from the sport in disgrace for doping violations.

While the sport reels from Tuesday's ruling that Salazar has been banned for four years, the US Anti-Doping Agency CEO Travis Tygart discussed further details about the Nike Oregon Project.

Sportsmail has learned Salazar has instructed his lawyers to prepare for another lengthy battle after immediately announcing his intention to appeal USADA's judgement earlier this week.

Dr Chakraverty, chief medical officer at UK Athletics at the time, gave an L-Carnitine infusion to Farah before the 2014 London Marathon. The procedure is controversial.

Neil Black will leave his role as UK Athletics' performance director at the end of this month after being heavily criticised for backing Alberto Salazar. Black had twice refused to rule out resigning.

Despite publicly standing by the coach who led Sir Mo Farah to four Olympic golds, Nike has responded to the backlash over the US Anti-Doping Agency findings by closing the set-up.

RIATH AL-SAMARRAI IN CHICAGO: Sir Mo Farah is still running... running away from any notion that he might have played it differently, and quickly towards the idea that it's all been media conspiracy.

RIATH AL-SAMARRAI IN CHICAGO: Alberto Salazar insists he did not mislead Sir Mo Farah over the doping scandal that has brought their relationship back into the spotlight.

An athlete at the Nike Oregon Project (NOP) run by controversial coach Alberto Salazar provided an anomalous blood sample in 2011, indicating they may have been taking the drug EPO,

The World Anti-Doping Agency has confirmed it will investigate the athletes who worked under Sir Mo Farah's disgraced former coach Alberto Salazar.

American coach Alberto Salazar, who worked with Mo Farah from 2011 to 2017, was banned for four years by the US Anti-Doping Agency (USADA) in October.

Sir Mo Farah has claimed he would have left Alberto Salazar sooner if he knew about his controversial practises at the Nike Oregon Project - despite staying with the disgraced coach for two more years.

Mo Farah has insisted he was left stunned by Alberto Salazar's ban for doping and had a tough time separating from the coach who guided him to four Olympic titles.

Former athlete Ari Lambie, who worked under disgraced coach Alberto Salazar, has spoken out about the mental and physical pain she went through during her time with him.

EXCLUSIVE BY RIATH AL-SAMARRAI: British Olympian Pavey has called for greater scrutiny of Salazar's involvement at UK Athletics from his four years as consultant with the organisation.

UK Athletics allowed Sir Mo Farah to continue training with Alberto Salazar after elements of the board felt 'blackmailed' by senior members of their performance team, according. to a review.

RIATH AL-SAMARRAI: UKAD have launched an attack on UK Athletics over their failure to share information relating to Sir Mo Farah's former coach Alberto Salazar in 2015 - calling for full disclosure.

UK Anti-Doping have finally received the full internal review into Sir Mo Farah's relationship with Alberto Salazar after their astonishing criticism of UK Athletics last month.