|Full name||Diego Fabbrini|
|Date of birth||31 July 1990|
|Place of birth||Pisa, Italy|
|Height||1.82 m (5 ft 11 1⁄2 in)|
|Playing position||Right winger Second striker|
|2013||→ Palermo (loan)||9||(1)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 12 October 2013.
† Appearances (Goals).
He made his first team debut in August 2009. On his first season as a professional player, at 19 years old, he became a regular and obtained 56 appearances and 1 goal in the Serie B league.
On 31 August 2010, Udinese signed Gabriele Angella along with Fabbrini in co-ownership deal for undisclosed fees. As part of the deal, Ricardo Chará and Flavio Lazzari joined Empoli, also in co-ownership deal. While Fabbrini would spend the 2010-11 season with Empoli.
Fabbrini returned to Udine in 2011–12 season and made his competitive debut on 24 August 2011, the second leg against Arsenal at home, replacing attacking midfielder Giampiero Pinzi and got yellow card at 88min in the same game.
On 31 August Udinese bought the remaining 50% registration rights from Empoli and Daniele Mori in co-ownership deal, also from Empoli. On 25 September 2011 he made his Serie A debut, in the away match against Cagliari. On 2 May 2012 he scored his first Serie A goal in a match won 1-0 against Cesena.
In November 2012 he signed a new 5-year contract with Udinese.
On 19 July 2013, Fabbrini was one of seven Udinese players to sign for Watford on permanent deals, signing a contract until 2017. Fabbrini made his debut as a substitute in a 1-0 win away to Birmingham City on 3 August 2013. He scored his first goal for the club on 17 August, in a 3-3 draw against Reading.
He made his debut with the Italy U-21 on 3 September 2010 in a qualification match against Bosnia Herzegovina played in Sarajevo. He scored his first goal with the U-21 on 24 March 2011, in a friendly against Sweden.
- "Gabriele Angella è un giocatore dell'Udinese". Udinese Calcio (in Italian). 31 August 2010. Retrieved 15 November 2010.
- "Fabbrini 100% bianconero, Mori a metà, ma resta all'Empoli." [Fabbrini 100% "White-Black", Mori half, and returns to Empoli.]. Udinese Calcio (in Italian) (www.udinese.it). 31 August 2011. Retrieved 31 August 2011.
- "Fabbrini rinnova fino al 2017!" (in Italian). Udinese Calcio. 17 November 2012. Retrieved 16 November 2012.
- "ANCORA DUE ACQUISTI; PRESI FAURLIN E FABBRINI" [TWO MORE SIGNINGS; FAURLIN AND FABBRINI IN] (in Italian). U.S. Città di Palermo. 31 January 2013. Retrieved 31 January 2013.
- "Watford confirm permanent signings of seven Udinese players" BBC Sport. 19 July 2013. Retrieved 1 August 2013.
- "Birmingham 0-1 Watford" BBC Sport. 3 August 2013. Retrieved 12 October 2013.
- "Reading 3-3 Watford" BBC Sport. 17 August 2013. Retrieved 12 October 2013.
- "England 2-1 Italy" BBC Sport. 15 August 2012. Retrieved 1 August 2013.