Belarusian road bicycle racer
Kanstantsin Sivtsov (or Siutsou (; Łacinka: Kanstancin Viktaravič Siŭcoŭ; born 9 August 1982) is a Belarusian former professional road bicycle racer, who rode professionally between 2001 and 2018 for the Itera, Lokomotiv, Fassa Bortolo, Acqua &amp; Sapone, Barloworld, HTC–Highroad, Team Sky, Team Dimension Data and Bahrain–Merida squads. He retired after provisionally being suspended from the sport following an adverse analytical finding for erythropoietin (EPO).
Career.
Sivtsov was born in the Belarusian city of Gomel in 1982. He won the under-23 road race at the UCI Road World Championships. Sivtsov joined Barloworld for the 2007 season, and rode the Tour de France, finishing 32nd overall.
Team High Road (2008–11).
Siutsou moved to Team High Road for 2008, where he took his first stage race overall victory at the Tour de Georgia, and came 16th overall in the Tour de France. In the 2009 Giro d'Italia, Sivtsov won his first two Grand Tour stages, the team time trial on stage one and a successful solo breakaway in stage eight.
Sivtsov enjoyed his most successful year in 2011. He finished tenth overall in the Giro d'Italia – again winning the team time trial stage – with an eighth-place finish in the Critérium du Dauphiné, and won the Belarusian National Time Trial Championships for the first time.
Team Sky (2012–15).
Sivtsov moved to Team Sky for the 2012 season. He was part of the teams that helped Richie Porte win the Volta ao Algarve, Bradley Wiggins win Paris–Nice, the Tour de Romandie and Critérium du Dauphiné, and Michael Rogers win Bayern–Rundfahrt. Sivtsov was selected to ride the Tour de France as one of Wiggins' main domestiques, but crashed out on stage three with remaining with a fractured left tibia, the first retirement of the 2012 Tour.
Sivtsov claimed a solo win on stage two of the 2013 Giro del Trentino.
Team Dimension Data (2016).
In October 2015, he announced that he would be leaving Team Sky after four seasons to join Team Dimension Data for 2016.
Doping case.
On 5 September 2018, the UCI announced that an out of competition test had resulted in an adverse analytical finding of Erythropoietin in a sample collected 31 July 2018. Siutsou was provisionally suspended pending the result of any B sample test. This followed his back injury sustained whilst carrying out a recon of the time trial at the Giro earlier that year.
On 23 June 2020, he was given a four-year ban for doping using EPO.
Major results.
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 6th Time trial, UCI Junior Road World Championships
 National Road Championships
2nd Time trial
3rd Road race
 2nd Points race, UEC European Under-23 Track Championships
 National Road Championships
2nd Road race
3rd Time trial
 1st Road race, UCI Under-23 Road World Championships
 1st Time trial, National Road Championships
 2nd Overall Volta a Lleida
 4th Ruota d'Oro
 7th Trofeo Melinda
 1st Road race, National Road Championships
 2nd Subida al Naranco
 3rd Gran Premio Industria e Commercio Artigianato Carnaghese
 4th Overall Course de la Paix
1st Young rider classification
1st Stage 5
 4th Gran Premio Nobili Rubinetterie
 9th Giro di Toscana
 10th Giro dell'Emilia
 2nd Giro dell'Appennino
 3rd Gran Premio Città di Camaiore
 3rd Tre Valli Varesine
 4th Giro del Lazio
 5th Coppa Placci
 8th Gran Premio di Lugano
 8th Gran Premio di Chiasso
 9th Overall Settimana Internazionale di Coppi e Bartali
 1st Overall Tour de Georgia
1st Stage 6
 Giro d'Italia
1st Stages 1 (TTT) &amp; 8
 9th Overall Tirreno–Adriatico
 10th Overall Tour de Romandie
1st Stage 3 (TTT)
 1st Stage 1 (TTT) Vuelta a España
 National Road Championships
1st Time trial
2nd Road race
 8th Overall Critérium du Dauphiné
 9th Overall Giro d'Italia
1st Stage 1 (TTT)
 5th Overall Bayern–Rundfahrt
 1st Time trial, National Road Championships
 Giro del Trentino
1st Stages 1b (TTT) &amp; 2
 1st Stage 2 (TTT) Giro d'Italia
 UCI Road World Championships
3rd Team time trial
10th Time trial
 8th Overall Route du Sud
 1st Time trial, National Road Championships
 4th Overall Route du Sud
 6th Overall Settimana Internazionale di Coppi e Bartali
 7th Trofeo Andratx-Mirador d'es Colomer
 8th Overall Vuelta a Andalucía
 National Road Championships
1st Road race
1st Time trial
 10th Overall Giro d'Italia
 6th Overall Tour of Croatia
 1st Overall Tour of Croatia
1st Stage 3
 3rd Time trial, National Road Championships
 9th Overall Vuelta a San Juan
References.
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