About Thomas Dekker
Born 1984. Thomas Dekker is a Dutch sport cyclist.
Thomas Dekker (born 6 September 1984) is a Dutch former professional road racing cyclist. His career highlights included winning Tirreno–Adriatico in 2006 and Tour de Romandie in 2007. He won two Dutch National Time Trial Championships and represented his country at the 2004 Summer Olympics held in Athens, Greece.
A few days before the start of the 2009 Tour de France, it was announced that Dekker had tested positive for EPO in a retroactive test carried out on a urine sample taken in December 2007. Dekker initially protested his innocence, but he later admitted to using EPO, claiming it was a one-time mistake. He eventually admitted to using EPO over at least parts of the 2007 and 2008 seasons, although he declined to give exact dates. Dekker was suspended for two years, from 1 July 2009 to 30 June 2011.
Dekker's career has been marked by other doping allegations. He was a client of Luigi Cecchini, an Italian doctor who was investigated in relation to doping matters, though Dekker adamantly denies that Cecchini was involved in his doping. In 2009 he was also questioned in the Humanplasma doping scandal, a suspected doping ring connected to Austrian manager Stefan Matschiner. Dekker retired in March 2015 after narrowly failing to set a new world hour record.
Career
Early years Dekker was born and raised in Dirkshorn, North Holland, Netherlands. He was nicknamed "The hulk from Dirkshorn" and joined the Rabobank junior team in 2002, winning the Junior National time trial championships, among other races. In 2003 he joined , the continental team of , winning two stages of Ster Elekrotoer, and the national under-23 titles in the Road Race and Time Trial disciplines. He also finished third in the Men's under-23 road race of the 2003 UCI Road World Championships.
In 2004 he won the Tour de Normandie, Olympia's Tour, the Dutch National Time Trial Championships and also participated in the 2004 Summer Olympics at the age of 19, finishing 21st in the individual time trial. Later in the season, he also won the Grand Prix Eddy Merckx with Koen de Kort but crashed out of the Tour de l'Avenir while he was leading the race. In September, he joined the UCI ProTeam for the rest of the 2004 season as a stagiaire. He won a stage of Rheinland-Pfalz Rundfahrt, finished second in both the U23 individual time trial and U23 road race of 2004 UCI Road World Championships and finished first in the UCI U23 Classification of 2004.
Rabobank
Dekker turned professional in 2005 with . In his first season as a professional, he won Grote Prijs Stad Zottegem and stages of Critérium International and Tour de Pologne. He also repeated his victory in the Dutch National Time Trial Championships and rode the Giro d'Italia.
In 2006 Dekker won the Tirreno–Adriatico stage race, making him the third Dutch cyclist to win the event, after Joop Zoetemelk (1985) and Erik Dekker (2002) and in 2007 the Tour de Romandie stage race, which featured two time trials and several difficult climbing stages in the Alps and Jura.
In 2007, Dekker debuted in the Tour de France. Although he had been dreaming of winning the young rider classification, he did not win it. He eventually reached the 35th place in the overall final standings, and sixth in the young rider classification, in the Tour. Dekker finished his 2007 season with his first top ten finish in a 'Classic,' the 2007 Giro di Lombardia.
The 2008 season got off to a promising start, with Dekker coming in 3rd place overall in both the Vuelta a Castilla y León and Tour of the Basque Country and achieving three top-ten finishes in the Ardennes classics. However, after a poor showing in the Tour de Suisse, Dekker was not selected by Rabobank for its 2008 Tour de France line-up.
On 14 August 2008 Dekker officially announced on his web page that he had split from Rabobank. Although an early report in SportWereld said Dekker was on the verge of signing with Garmin-Chipotle, team manager Jonathan Vaughters later denied this rumour. On 27 September 2008, it was announced that Dekker had signed a contract with for two years.
Silence-Lotto In 2009, Dekker finished a respectable 16th in the Tour of Switzerland, with a highlight of 3rd place in the second, 39 km long, individual time trial.
On 1 July 2009, it was announced that a re-test of an out-of-competition sample taken in December 2007, while Dekker was with Rabobank, was found to contain the banned substance EPO. Silence–Lotto immediately removed him from their team for the 2009 Tour de France. Once his B-sample confirmed the EPO positive, Silence-Lotto fired Dekker, who admitted doping, apologizing and calling it "a mistake". According to UCI, Dekker was singled out as a result of the biological passport programme, prompting the UCI to conduct a detailed review of past doping controls.
Return with Garmin
Dekker returned to racing on 6 July 2011 in the Grote Prijs Stad St. Niklaas, where he finished 70th. On 1 August he announced that he had signed with the , the development team of . On 18 September he won his first race after his comeback. He won the Duo Normand Team Time Trial together with Paris–Roubaix winner Johan Vansummeren. team manager Jonathan Vaughters challenged the two to beat the time he himself rode in 2001 with Jens Voigt. Dekker and Vansummeren beat the time of Vaughters and Voigt.
On 18 November 2011, Dekker was confirmed as a rider for the 2012 season. He left the team in November 2014. Dekker subsequently announced that he would focus on an attempt to break the world hour record in the spring of 2015 instead of finding a new team for the road cycling season.
Doping In a 2013 interview with Dutch daily newspaper NRC Handelsblad, Dekker stated that he started using performance-enhancing drugs when he joined in 2005. In that team doping (including EPO) had been used since the mid-1990s, and Dekker stated that it was part of the profession: "doping was a way of life". Documents obtained during the Operación Puerto doping case proved that Dekker had been a customer of Eufemiano Fuentes, a well-known sports doctor who had assisted the Kelme team and many cycling professionals with blood doping; Spanish police found bags of Dekker's blood (Dekker was code-named "rider 24" and "Clasicómano Luigi"), and it turned out that he had had at least two transfusions in the spring of 2006, one four days before winning the Tirreno–Adriatico and another before riding the Tour of the Basque Country. In his interview with NRC, he admitted to having used EPO as well.
Career achievements Major results
2003 National Under-23 Road Championships 1st Road race 1st Time trial
3rd De Vlaamse Pijl 7th Overall Ster Elektrotoer 1st Prologue & Stage 2 2004 1st Time trial, National Road Championships 1st Overall Le Triptyque des Monts et Châteaux 1st Stage 2 1st Overall Tour de Normandie 1st Overall Olympia's Tour 1st Grand Prix Eddy Merckx 1st Stage 1 Tour de l'Avenir UCI Road World Under-23 Championships
3rd Grand Prix Pino Cerami 4th Overall Volta ao Algarve 2005 1st Time trial, National Road Championships 1st Grote Prijs Stad Zottegem 2nd Overall Critérium International 1st Stage 2 3rd Overall Tour de Pologne 1st Stage 7 (ITT) 4th Overall Eneco Tour 1st Young rider classification 6th Overall Tour Méditerranéen 2006 1st Overall Tirreno–Adriatico 9th Overall Eneco Tour 2007 1st Overall Tour de Romandie 1st Points classification 1st Stage 5 (ITT) 1st Overall 3-Länder-Tour 1st Stages 2 & 4 (ITT) 1st Trofeo Pollença 1st RaboRonde Heerlen 1st Stage 6 Tour de Suisse 5th Overall Eneco Tour 8th Giro di Lombardia 9th Gran Premio Bruno Beghelli
2008 3rd Overall Tour of the Basque Country 3rd Overall Vuelta a Castilla y León 1st Points classification 5th Amstel Gold Race 5th La Flèche Wallonne 6th Liège–Bastogne–Liège 2009 4th Overall Tour of Belgium
2011 1st Duo Normand (with Johan Vansummeren) 7th Chrono Champenois 2012 1st Stage 2 (TTT) Tour of Qatar 5th Overall Circuit de la Sarthe 1st Stage 5 2013 8th Overall Ster ZLM Toer 2014 5th Overall Ster ZLM Toer
General classification results timeline Grand Tour general classification results timeline Grand Tour 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Giro d'Italia 75 — — — — — — — 136 DNF Tour de France — — 35 — — — — — — — / Vuelta a España — — — — — — — 149 — —Major stage race general classification results Major stage race 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 / Paris–Nice 31 — — — — — — 88 — — / Tirreno–Adriatico —1 49 — 98 — — — DNF 106 Volta a Catalunya — — — — 54 — — — — — Tour of the Basque Country — 75 DNF3 DNF — — — — — / Tour de Romandie 33 —1 DNF — — — — — — Critérium du Dauphiné — 71 — — — — — — — — Tour de Suisse — — 39 DNF 16 — — DNF — —
+ Legend — Did not compete DNF Did not finish
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Important facts
People in Thomas Dekker's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Thomas Dekker's
Frequently asked questions
Who is Thomas Dekker?
Dutch road bicycle racer
When was Thomas Dekker born?
Thomas Dekker was born on 6 September 1984 in Dirkshorn.
What is Thomas Dekker's occupation?
Thomas Dekker is a sport cyclist.
What nationality is Thomas Dekker?
Thomas Dekker is Dutch.
Sources & further reading
· DBpedia: Thomas Dekker (cyclist)
Cite this page
APA: Biography.guide. (2026). Thomas Dekker. https://biography.guide/thomas-dekker-sport-cyclist/
MLA: "Thomas Dekker." Biography.guide, https://biography.guide/thomas-dekker-sport-cyclist/.
Chicago: "Thomas Dekker." Biography.guide. https://biography.guide/thomas-dekker-sport-cyclist/.
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