|Full name||Xavier Companys Aguado|
|Date of birth||5 June 1968|
|Place of birth||Badalona, Spain|
|Height||1.86 m (6 ft 1 in)|
|Playing position||Centre back|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Aguado was born in Badalona, Barcelona, Catalonia. After two seasons at local CE Sabadell FC in the second division, he joined Real Zaragoza in La Liga for the 1990–91 campaign, quickly establishing as first-choice whilst displaying aerial ability and team leadership alike (he would be early on named club captain).
Aguado was part of the Zaragoza team that beat Arsenal in the 1994–95 UEFA Cup Winners' Cup final. From 1997 to 1999 he scored an impressive nine league goals combined, including a brace in a 2–2 home draw against SD Compostela on 28 September 1997. However, during his 13-year career at the Aragonese, he also amassed a poor disciplinary record, collecting, in the league alone, 109 yellow cards and being sent off 18 times, the latter being an all-time worst in the competition.
After Zaragoza's top flight relegation in 2001–02, Aguado retired from professional football (he was still with the squad during the following season, but made no appearances whatsoever) after 473 official games with the same team.
- "El jugador que siempre estuvo allí (por Xavi Aguado)" [The player that was always around (by Xavi Aguado)] (in Spanish). El Periódico de Aragón. 17 November 2011. Retrieved 25 April 2014.
- "1994/95: Nayim's bolt from the blue sinks Arsenal". UEFA.com. 1 June 1995. Retrieved 25 April 2014.
- Ohen frustra la remontada (Ohen frustrates comeback); El Mundo Deportivo, 29 September 1997 (Spanish)
- Aguado, perplejo ante el castigo que le cayó (Aguado, lost for words after punishment); El Mundo Deportivo, 12 March 1997 (Spanish)
- "Los 12 más expulsados de la Liga" [The 12 with most ejections in Liga] (in Spanish). ABC. 20 February 2013. Retrieved 25 April 2014.
- "Zaragoza, no hay quinta Copa mala" [Zaragoza, no such thing as a bad fifth Cup] (in Spanish). ABC. 1 July 2001. Retrieved 11 June 2014.