|Full name||Juan Castaño Quirós|
|Date of birth||10 April 1971|
|Place of birth||Gijón, Spain|
|Height||1.75 m (5 ft 9 in)|
|* Senior club appearances and goals counted for the domestic league only.
Skilled Juanele started playing professionally for Sporting de Gijón, making his first-team – and La Liga – debuts at the age of 20 and finishing his first season with his hometown club with three goals in 24 games. He became an undisputed starter in the following years.
In 1994, Juanele signed with CD Tenerife, being an essential offensive unit as the Canary Islands side reached the semi-finals in the 1996–97 UEFA Cup, scoring twice against S.S. Lazio (5–3 home win, 5–4 on aggregate) and at Feyenoord (4–2 win, 4–2 on aggregate). In addition, he netted 15 league goals in 60 matches as they achieved back-to-back top-ten finishes, which included the fifth place in 1996 that led to the European exploits.
After Tenerife's 1999 relegation, Juanele joined Real Zaragoza, helping the Aragonese to two Copa del Rey trophies in the early 2000s, even though he was already a fringe player in the second conquest. Amassing top division totals of 346 games and 61 goals, he left in 2004 to Terrassa FC in the second division, joining lowly Real Avilés Industrial after one season.
Juanele earned five caps for the Spain national team in 1994, scoring twice (in his debut on 19 January, a 2–2 home draw against Portugal, and his last match five months later, a 2–0 away win over Canada). He was subsequently named in the 1994 FIFA World Cup squad, but did not play in the tournament.
|1.||19 January 1994||Balaídos, Vigo, Spain||Portugal||2–1||2–2||Friendly|
|2.||10 June 1994||Claude Robillard, Montreal, Canada||Canada||0–2||0–2||Friendly|
After some episodes of depression and a battle to overcome an addiction to prescription drugs, Juanele was admitted in early 2008 to a Gijón hospital due to an excessive intake, but later recovered, eventually opening a football school with former Sporting teammate Iván Iglesias.
- Histórico! (Historical!); Mundo Deportivo, 30 October 1996 (Spanish)
- El Tenerife hace historia (Tenerife makes history); Mundo Deportivo, 4 December 1996 (Spanish)
- El Zaragoza hace valer su historia (Zaragoza makes history prevail); El País, 1 July 2001 (Spanish)
- Juanele vuelve para reforzar al Real Avilés (Juanele returns to strengthen Real Avilés); La Voz de Asturias, 13 August 2005 (Spanish)
- "España, de cal y arena" [Spain, heads and tails] (PDF) (in Spanish). Mundo Deportivo. 20 January 1994. Retrieved 18 May 2015.
- "No más pruebas" [No more tryouts] (in Spanish). Mundo Deportivo. 11 June 1994. Retrieved 18 May 2015.
- Juanele, ingresado en la UCI del hospital de Cabueñes (Juanele, in Cabueñes Hospital's Intensive Care); El Mundo, 29 April 2008 (Spanish)
- "Llegué a pensar que no servía para hacer nada" ("I went as far as thinking i was no good at anything"); Marca, 7 October 2013 (Spanish)
- "Qué fue de… Iván Iglesias" [What happened to… Iván Iglesias] (in Spanish). 20 Minutos. 7 August 2009. Retrieved 18 May 2015.
- "Zaragoza, no hay quinta Copa mala" [Zaragoza, no such thing as a bad fifth Cup] (in Spanish). ABC. 1 July 2001. Retrieved 8 July 2014.
- "Galletti gives Zaragoza glory". UEFA.com. 18 March 2004. Retrieved 8 July 2014.