|Date of birth||July 11, 1954|
|Place of birth||San Severino Marche, Italy|
|1984–1985||Tolentino (Under-19 team)|
|1999–2000||Castel di Sangro|
Castori was born in San Severino Marche, but grew up in Tolentino. He started his coaching career in 1980 at the age of 26 as head coach of Seconda Categoria team Belfortese from Belforte del Chienti. Initially a boss for amateur teams, having spent three seasons in Seconda Categoria (second-lowest division in Italian football) and three others in Prima Categoria, he led a Promozione team, Cerreto, to reach Serie D in 1990 (there was no Eccellenza division at that time). From 1992 to 1998 Castori coached Eccellenza team Tolentino leading them to Serie C2. In 1998-1999 he won a Serie D league and a Scudetto Dilettanti with Lanciano. After a poor Serie C1 season with Castel di Sangro, he returned at Lanciano in 2000, and immediately won the Serie C2 league. He stayed at Lanciano until 2003.
In the summer 2003 he was appointed head coach of Serie C1 team Cesena. At his first season, he led Cesena to win the promotion playoffs and the Coppa Italia Serie C; this however was obscured by a 3-year ban on him after having been protagonist of a riot during the return leg of the promotion playoff finals against Lumezzane. The ban was successively reduced to 2 years following a pardon request by Castori himself; during this time, Castori was unable to serve as head coach but, despite this, he was confirmed as Cesena's boss, with assistant manager Massimo Gadda serving at his place on the dugout until January 23, 2006.
On November 11, 2007, following a 1–4 loss to Rimini in a regional derby and only seven points gained in the first fourteen matches, Castori was dismissed by Cesena, after four seasons at the helm of the bianconeri, but was reinstated at his managing role only three months later following Giovanni Vavassori's dismissal on February 25, 2008; his comeback at Cesena proved however to be unsuccessful, as the bianconeri were relegated to Serie C1 at the end of the season.
Castori served the 2008–09 season as head coach of newly promoted Serie B team Salernitana. He was successively sacked later on December, to be replaced by Bortolo Mutti, and then re-called on February, only to be dismissed again on April and replaced by Fabio Brini, who guided the club to safety.
He was then appointed on June 2009 as new head coach of Piacenza for the upcoming 2009–10 Serie B season, being however dismissed on November due to poor results.
On 3 November 2010 he returned into management as head coach of Serie B relegation-threatened club Ascoli. On November 2, 2011 was sacked because of bad results. Ascoli is currently last in Serie B.
On 30 June 2014, Castori was announced as the new manager of Serie B team Carpi, on a one year deal. He started his Carpi experience in a hugely successful way, leading the small outsider club top of the league table by the end of the first season half and turning them into strong contenders to a historical first Serie A promotion. He was relieved of his duties on 28 September 2015. He was reinstated as manager a month later on 3 November 2015.
- "Bentornato: Fabrizio Castori, nel posticipo di stasera, torna sulla panchina del suo Cesena" (in Italian). Quelliche.net. 2006-01-23. Retrieved 2007-11-12.
- "Per Juve e Cesena l'impresa è seriale" (in Italian). Avvenire. 2005-10-15. Archived from the original on 2007-09-30. Retrieved 2007-11-12.
- "Serie B: Cesena sack Castori". Football Italia. 2007-11-11. Archived from the original on 2007-11-13. Retrieved 2007-11-11.
- "Esonerato Vavassori, al suo posto torna Fabrizio Castori" (in Italian). AC Cesena. 2008-02-25. Retrieved 2008-02-25.
- "Mister Castori abbraccia Salerno" (in Italian). Salernitana Calcio 1919. 2008-06-12. Archived from the original on 2008-06-14. Retrieved 2008-06-15.
- "Comunicato Stampa" (in Italian). Piacenza Calcio. 2009-11-10. Retrieved 2009-11-10.
- "Fabrizio Castori nuovo allenatore dell'Ascoli" (in Italian). Ascoli Calcio 1898. 3 November 2010. Retrieved 27 November 2010.
- "ASCOLI: VIA CASTORI, SILVA NUOVO TECNICO" (in Italian). Campionato Serie A. 2 November 2011. Retrieved 5 November 2011.
- "PANCHINA A CASTORI" (in Italian). Carpi FC 1909. 19 November 2014. Retrieved 30 June 2014.
- "Carpi fire Giuseppe Sannino to reinstate Fabrizio Castori". BBC Sport. 3 November 2015. Retrieved 10 November 2015.