|Full name||Stefano Pirazzi|
11 March 1987|
|Height||1.80 m (5 ft 11 in)|
|Weight||62 kg (137 lb)|
|2007–2009||Palazzago Saclà Maiet|
Born in Alatri, Pirazzi has competed as a professional since 2010, joining Colnago–CSF Inox from the amateur ranks; his twin brother Roberto is also a cyclist, and was also a member of the Palazzago Rad Logistica team with Stefano in 2009.
In May 2017, one day before the start of the 2017 Giro d'Italia, the UCI announced that Pirazzi and Bardiani–CSF team-mate Nicola Ruffoni had tested positive for growth hormone-releasing peptides in out-of-competition controls carried out the previous month. Later that month the UCI confirmed that both riders' B-samples had also tested positive, leading Bardiani–CSF to confirm that they would terminate both riders' contracts. In October, Pirazzi was given a four-year ban backdated to the date of the original announcement – as a result, he is unable to compete again until May 2021.
- 1st Stage 3 Giro delle Regioni
- 4th Giro del Canavese
- 6th Gara Ciclistica Milionaria
- 8th Overall Volta a Lleida
- 1st Stages 4 & 5b
- 7th Cronoscalata Gardone Valtrompia
- 1st Gara Milionaria Montappone
- 3rd Trofeo Internazionale Bastianelli
- 6th Giro del Cigno
- 1st Mountains classification Giro della Provincia di Reggio Calabria
- 1st Young rider classification Giro del Trentino
- 3rd Overall Settimana Internazionale di Coppi e Bartali
- 1st Mountains classification Tirreno–Adriatico
- 1st Mountains classification Giro d'Italia
- 2nd Time trial, National Road Championships
- 7th Overall Giro del Trentino
- 1st Stage 17 Giro d'Italia
- 4th Time trial, National Road Championships
- 2nd Giro dell'Appennino
- 1st Stage 4 Settimana Coppi e Bartali
Grand Tour general classification results timeline
|Tour de France||—||—||—||—||—||—||—|
|Vuelta a España||—||—||—||—||—||—||—|
|—||Did not compete|
|DNF||Did not finish|
- "Pirazzi handed four-year ban for doping - News Shorts". Cyclingnews.com. Immediate Media Company. 3 October 2017. Retrieved 5 January 2018.
- "La Palazzago sestoautoveicoli pronta per un triplice impegno" [The sixth Palazzago season ready for a triple engagement]. BergamoSportNews.com (in Italian). Bergamo Sport News. 28 February 2009. Retrieved 9 March 2012.
- "Giro d'Italia: Two Bardiani CSF riders positive in out-of-competition control". cyclingnews.com. 4 May 2017. Retrieved 4 May 2017.
- "Pirazzi and Ruffoni sacked by Bardiani CSF as B-samples come back positive". cyclingnews.com. 19 May 2017. Retrieved 20 May 2017.
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