RIATH AL-SAMARRAI IN DOHA: Christian Coleman is on course for 100 metre glory at the World Athletics Championships but his doping violations mean he can't replace Usain Bolt as the face of the sport.

COMMENT BY RIATH AL-SAMARRAI: To hear Christian Coleman in the early hours of Sunday morning was to feel bemused by the brazenness of it all,

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.

Brisbane Broncos player James Segeyaro's career hangs in the balance after he returned a positive drug test.

IOC president Thomas Bach has described Alberto Salazar's ban as 'very worrying' and has called on the World Anti-Doping Agency to look at athletes who worked with the disgraced coach.

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.

There was a time, long before their visceral hatred of adidas fuelled a desire to become the biggest, brashest sports brand of all, when Nike had something resembling a soul.

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.

RIATH AL-SAMARRAI IN DOHA: In the end it was all too much for Muir. There were simply too many injuries and one athlete who ran the sixth quickest 1500m time in history.

The head of the US Anti-Doping Agency, Travis Tygart, who led the conviction of Alberto Salazar for doping offences has hit back at Paula Radcliffe.

OLIVER HOLT - CHIEF SPORTS WRITER: To say Radcliffe's performance when asked about the ban handed down to Salazar by USADA was awkward would be an understatement.

EXCLUSIVE BY ROB DRAPER: Travis Tygart, head of the US Anti-Doping Agency who led the prosecution, says Salazar's methods threatened the health of his athletes.

Two-time Olympian Kara Goucher trained under Salazar between 2004 and 2011 before making claims against him to the USADA in 2013. Salazar was given a four-year ban for doping violations earlier this week.

Dillian Whyte could be back in the ring before the New Year and is still optimistic about beating his doping charge.  The investigation into his failed test is still ongoing.

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.

Slovenian cyclist Janez Brajkovic, 35, posted the pictures of his incredibly lean legs after returning to the track following a ten-month doping ban for testing positive for methylhexaneamine.

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,

A former rugby league star (pictured) has been jailed for smuggling exotic animals to pay off a $25,000 debt.  

Dillian Whyte will have to wait until February 2021 for his WBC heavyweight title shot, if his 'situation is resolved' by UK Anti-Doping. 

Although Whyte has not been banned, the WBC decided to suspend his status as 'interim' champion. Therefore, Tyson Fury has been installed as the new mandatory challenger.

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

James Segeyaro, 28, was stood down from the Brisbane Broncos in October after returning a positive A-sample for banned muscle-enhancing drugs.

EXCLUSIVE BY MIKE KEEGAN: Top-flight stars can now access information via their mobile phones on a wide range of issues including doping regulations and plans for a life after football.

Track and field athlete, Mary Cain, once the 'fastest girl in America' on Thursday urged Nike to change their system after her former coach Alberto Salazar was banned after a doping investigation.

Shane Sutton sensationally stormed out of the Richard Freeman medical tribunal on Tuesday after branding the former Team Sky and British Cycling medic a 'spineless liar'.

The former Team Sky head coach gave evidence at the tribunal of Dr Richard Freeman, who is accused of ordering 30 banned Testogel sachets to the National Cycling Centre in May 2011.

Russia could be set for a new ban from major international sporting events like next summer's Olympic and Paralympic Games over claimed inconsistencies in anti-doping data.

The former Nike Oregon Project marathon runner has been looking for a new training arrangement since the project was disbanded in the wake of Alberto Salazar's doping ban.

The prospect of Russian track and field athletes taking part in the Tokyo Olympics are looking slimmer after the president of the country's athletics federation was charged on Thursday.

Russia's reinstatement process has been suspended by the World Athletics Council following fresh anti-doping charges against senior officials. The RusAF has been banned since 2015.

Weighing in at 19st 11lbs for his first fight with Joshua, Ruiz stunned the world by dropping the Brit and his chiseled physique to the canvas a staggering four times before getting the stoppage in June.

It follows an investigation into the data handed over by the Moscow laboratory in January as part of the reintegration process of the Russian Anti-Doping Agency following the state-sponsored doping scandal.

Investigators from the World Anti-Doping Agency found inconsistencies in laboratory data obtained from the Russian anti-doping agency in January.

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.

EXCLUSIVE BY ROB DRAPER: UK Athletics called a special meeting with the English Institute of Sport to discuss the controversial use of thyroid medication on elite athletes.

Dillian Whyte has been officially cleared by UK Anti-Doping following a lengthy investigation into a positive test in the build-up to his points win against Oscar Rivas in the summer.

Dillian Whyte should be immediately reinstated as mandatory challenger for the WBC heavyweight title after being cleared of doping, according to promoter Eddie Hearn. 

Russia have been banned from the world's top sporting events for four years, including next summer's Tokyo Olympics and the 2022 Qatar World Cup, for tampering with doping tests.

Vladimir Putin's comments come after WADA barred teams under a Russian flag from competing at the Olympic and Paralympic Games in 2020 and 2022 and the football World Cup in 2022.

Richard Freeman's barrister has claimed a current British Cycling coach used a Coke can containing urine to try to help Shane Sutton cover up a doping offence during his riding career.

EXCLUSIVE BY DANIEL MATTHEWS: Whyte failed a drugs test ahead of his fight with Oscar Rivas in London in July. The Brixton heavyweight also changed his gloves at the last minute.

EXCLUSIVE BY MATT HUGHES: American athletes are planning podium protests at the Olympics to express anger at the presence of Russian athletes if they win medals at next summer.

British Olympic chiefs have called for even tougher sanctions against Russia to prevent their athletes competing as neutrals in Tokyo next year.

The 21-year-old tested positive for Ligandrol during an out-of-competition test in Cairns in July and appeared on The Sunday Project to proclaim her innocence.