|Full name||Carlos Andrés Diogo Enseñat|
|Date of birth||18 July 1983|
|Place of birth||Montevideo, Uruguay|
|Height||1.85 m (6 ft 1 in)|
|1999–2001||River Plate (UY)|
|2001–2004||River Plate (UY)||74||(3)|
|2006–2007||→ Zaragoza (loan)||30||(4)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 19 January 2015
He amassed La Liga totals of 120 games and six goals over the course of five seasons, representing in the competition Real Madrid and Zaragoza. He also played professionally, other than in his own country, in Argentina and Belgium.
In the summer of 2005, Diogo signed with Spanish giants Real Madrid as compatriot Pablo García, but found first team opportunities scarce. On 23 August 2006, the capital club decided to send him to fellow La Liga side Real Zaragoza on a season-long loan; in April 2007 the move was made permanent, but Madrid agreed to take just €4,5 million instead of the initial 6 million with the condition the player did not join FC Barcelona in the future.
On 6 January 2007, Diogo was involved in a fight with Sevilla FC's Luís Fabiano after apparently stepping on the Brazilian's hand and insulting him, which led to the latter putting the former in a strangle-hold in the closing stages of the game. This incident was punished with a five-game ban to both players.
Due to a serious knee injury, Diogo missed the entire 2008–09 campaign, with the Aragonese now in the second division. He underwent a second operation in April 2009, being sidelined for a further eight months.
On 12 December 2009, with Zaragoza back in the top level, Diogo returned to action with a goal, but in a 1–2 league home loss against Athletic Bilbao. The player still contributed with a further 14 matches, as the team managed to avoid relegation.
Diogo returned to full fitness in 2010–11, starting in all the league games he appeared in (2,950 minutes of play) as Zaragoza again narrowly escaped relegation. He left the club in July, after failing to negotiate a new deal.
Diogo signed a contract with PFC CSKA Sofia in mid-January 2012, but requested to leave the Bulgarian club after only 15 days, which was conceded. In late September he returned to active, signing with Zaragoza neighbours SD Huesca.
- Uruguayan pair make Madrid move; UEFA.com, 1 July 2005
- Diogo makes Zaragoza move; UEFA.com, 23 August 2006
- El Zaragoza ya ha pagado los 4,5 millones por Diogo (Zaragoza have already paid 4,5 million for Diogo); Diario AS, 12 April 2007 (in Spanish)
- Fight with Luís Fabiano video; at YouTube
- Players punished for pitch battle; UEFA.com, 10 January 2007
- Carlos Diogo, operado de la rodilla derecha, estará de baja unos ocho meses (Carlos Diogo, after right knee surgery, will miss about eight months); Marca, 17 April 2009 (in Spanish)
- Muniain inspires Bilbao win; ESPN Soccernet, 12 December 2009
- Real Zaragoza announce surprise departures of Carlos Diogo and Jorge Lopez Archived 8 January 2014 at the Wayback Machine.; A Different League, 16 July 2011
- Carlos Diogo, de Bulgaria a Brasil en dos semanas (Carlos Diogo, from Bulgaria to Brazil in two weeks); Merca Fútbol, 7 February 2012 (in Spanish)
- Diogo se convierte en nuevo jugador de la SD Huesca (Diogo becomes new SD Huesca player); Vavel, 27 September 2012 (in Spanish)
- Carlos Diogo tekent contract bij KAA Gent (Carlos Diogo signs contract with KAA Gent) Archived 2 February 2014 at the Wayback Machine.; KAA Gent, 26 June 2013 (in Dutch)
- Carlos Diogo verlaat KAA Gent (Carlos Diogo leaves KAA Gent) Archived 2 February 2014 at the Wayback Machine.; KAA Gent, 31 January 2014 (in Dutch)
- Leandro Cabrera y Carlos Diogo, al Zaragoza (Leandro Cabrera and Carlos Diogo, to Zaragoza); Vavel, 13 August 2014 (in Spanish)
- Copa América 2004 Archived 22 October 2008 at the Wayback Machine.; at RSSSF
- En el nombre del padre, del hijo y... del fútbol (In the name of the father, the son and... football); La Red 21, 10 October 2001 (in Spanish)