Tom Dumoulin said he "felt betrayed" by the revelation his former team-mate Georg Preidler was involved in a blood doping ring.
Doping
An unfortunate truth for cycling fans everywhere
is that doping has had no small part to play in the history of the sport.
The use of performance enhancing substances were widely accepted in the early era of gruelling races like the Tour de France. A number of incidents however, including the death of Danish rider Knud Enemark Jensen at the 1960 Olympic Games team time trial, who was using amphetamines at the time, saw rules gradually introduced to combat doping.
Still, even to the present day, positive tests are not uncommon. Lance Armstrong, who had won seven consecutive Tour de France titles until he was found guilty of using PEDs in a 2012 report, is potentially the most notorious drug cheat in cycling, if not sporting history.
But while cycling’s uneasy relationship with doping continues, scientific gains have been made amongst the agencies trying to catch those who cheat, with the introduction of the Athlete Biological Passport (ABP) at the beginning of the 2008 race season by the UCI.
The World Anti-Doping Agency (WADA) is the ruling authority on anti-doping for more than 600 sports organisations around the world, including cycling’s international body, the UCI.
Marcel Kittel says blood doping revelations ‘a slap in the face to clean athletes like him’
Marcel Kittel has responded to the blood doping revelations after his former team-mate was caught up in the scandal.
Georg Preidler’s team manager on blood doping scandal: ‘You have to keep your eyes open’
Cycling must keep its eyes open for doping, says Groupama-FDJ manager Marc Madiot after the case involving one of his riders.
Groupama-FDJ rider Georg Preidler quits team over blood doping
A second rider has been implicated in the unfolding blood doping scandal, this time Groupama-FDJ’s Georg Preidler.
Former Aqua Blue Sport rider Stefan Denifl ‘confesses to blood doping in police interview’
The former Aqua Blue Sport rider Stefan Denifl has confessed to blood doping in a police interview, according to reports.
Doping ban for Spanish Pro Continental rider overturned by court
Spanish Pro Continental rider Ibai Salas has had his four year doping ban overturned by the courts.
Movistar rider banned for four years after doping offence
Movistar rider Jaime Rosón has been banned from racing for four years for a doping offence.
Spanish team Burgos – BH given wildcard spot for Volta a Catalunya amid doping suspension
Spanish team Burgos – BH has been handed a wildcard spot for the Volta a Catalunya after they were suspended following a string of doping offences.
Amateur racer given four-year ban after testing positive for EPO and testosterone
An amateur bike racer has been handed a four-year ban after he tested positive for a cocktail of performance enhancing drugs, including EPO and testosterone.
Jani Brajkovic banned for 10 months over contaminated supplement
The Slovenian was handed a reduced ban after the UCI accepted his explanation of ingesting the banned substance through a contaminated supplement
Anti-doping campaigner Christophe Bassons given compensation by French federation after ban
Life-long critic of doping Christophe Bassons has been awarded compensation by the French cycling federation after he was suspended in 2012.
Lotto-Soudal rider Tosh Van der Sande suspended after positive test at Ghent Six Day
Tosh Van der Sande has been suspended by Lotto-Soudal after he returned a positive test during the Ghent Six Day in November.
Spanish team Burgos-BH suspended by UCI after doping scandals
Spanish team Burgos-BH has been suspended by the UCI after an number of doping scandals in the last year.
Spanish team Burgos-BH voluntarily suspends racing after string of doping offences
Spanish team Burgos-BH have opted to suspend themselves from racing after three riders were banned for doping in the last year.
Kazakh rider banned for two years after failing to confirm whereabouts
A Kazakh rider has been banned for two years after he failed to confirm his whereabouts to anti-doping authorities.
André Cardoso says he’ll fight four-year doping ban and prove his innocence
The Portuguese rider said he is trying to raise funds to take legal action against the UCI
Former Bardiani-CSF pro fails to overturn growth hormone doping ban
The Italian rider had appealed his four-year ban
Operation Puerto doping case may be closed without identities of 29 athletes being revealed
The Operation Puerto doping case may be closed without the identities of 29 athletes linked to the scandal being revealed.
Former Trek-Segafredo rider André Cardoso banned more than a year after EPO positive
Trek-Segafredo’s André Cardoso has been banned more than a year after testing positive for EPO.
Pro continental Burgos-BH rider banned for four years for doping violation
A Spanish rider for the Burgos-BH professional continental team has been banned for four years for a doping offence.
Lance Armstrong calls Johan Bruyneel ‘greatest sports director of all time’ after former manager banned for life
Lance Armstrong has called his former manager Johan Bruyneel “the greatest sports director of all time,” after the Belgian was banned from cycling for life.
Head of WADA says anti-doping campaigners ‘refuse to accept reality’ of Chris Froome salbutamol case
The president of WADA has responded to criticism after cycling anti-doping campaigners called for him to resign.
Cycling anti-doping campaigners call for WADA president to resign after controversies
Cycling’s anti-doping campaigners have called for the president of the World Anti-Doping Agency (WADA) to step down in the wake of a number of controversies.
Johan Bruyneel at the top of ‘one of the largest doping programs which ever existed in any sport’
Lance Armstrong’s former manager Johan Bruyneel was at the top of “one of the largest doping programmes which ever existed in any sport”, according to authorities.
Lance Armstrong’s former manager Johan Bruyneel banned from cycling for life
Lance Armstrong’s former manager Johan Bruyneel has been banned from cycling for life.