|Full name||Julen Guerrero López|
|Date of birth||7 January 1974|
|Place of birth||Portugalete, Spain|
|Height||1.79 m (5 ft 10 1⁄2 in)|
|Playing position||Attacking midfielder|
* Senior club appearances and goals counted for the domestic league only.
Ambidextrous, the attacking midfielder was mainly known for his skills and shooting ability. A Spanish international since 1993, he represented the nation at two World Cups, gaining more than 40 caps and appearing in more than 400 official games for his only team.
Born in Portugalete, Biscay, Guerrero joined Athletic Bilbao as an eight-year-old, and subsequently progressed through the junior ranks of the club. In the 1991–92 season he appeared for the reserves in the second division, being as Aitor Karanka a member of the under-19 team that won a national cup and league double in 1992.
In September 1992, aged 18, Guerrero made his senior debut for Athletic, under Jupp Heynckes. He quickly made an impact and, although a midfielder, scored 28 La Liga goals in his first two seasons combined (65 in his first six). He was awarded the New Spanish Player of the Year by El País in 1993, and won the Spanish Footballer of the Year by both Don Balón and El País the following year. During the 1993–94 campaign, he scored a hat-trick against Albacete Balompié (4–1, home), adding four against Sporting de Gijón (7–0 also at the San Mamés Stadium).
The early promise Guerrero showed attracted interest from, among others, Real Madrid, FC Barcelona, Atlético Madrid, Juventus FC, S.S. Lazio and Manchester United. However, he remained loyal to Athletic and, in 1997, signed a ten-year contract which was the longest in the club's history, and also made him the team's highest-paid player.
In 1997–98, Guerrero netted eight times in 29 contests as the Basques finished second, leading to direct qualification for the UEFA Champions League. However, in the following years, his career went into decline and, in 2002, he was dropped by coach Luis Fernández, while still only 28; in his last four seasons combined he could only manage 57 games with just four goals but, despite his poor form, remained a fan favourite, and the decision to drop him caused some controversy.
On 11 July 2006, Guerrero announced his retirement as a player at an emotional press conference. He scored 116 goals in 430 competitive matches over the course of 14 seasons, including four in 17 appearances in various European competitions.
Immediately after retiring, Guerrero took charge of the Lezama youth ranks, leaving the post after two years.
On 27 January 1993, when still only 19, Guerrero made his debut for Spain in a friendly game with Mexico, in Las Palmas. He went on to play 41 games and score 13 goals, including one at the 1994 FIFA World Cup, and also represented the nation at the 1998 World Cup and UEFA Euro 1996.
Among Guerrero's personal international highlights were hat-tricks against Malta (3–0 in Attard, on 18 December 1996) and Cyprus (8–0, 8 September 1999). He played his last game for Spain in October 2000.
|1.||2 June 1993||Žalgiris Stadium, Vilnius, Lithuania||Lithuania||0–1||0–2||1994 World Cup qualification|
|2.||2 June 1993||Žalgiris Stadium, Vilnius, Lithuania||Lithuania||0–2||0–2||1994 World Cup qualification|
|3.||8 September 1993||Rico Pérez, Alicante, Spain||Chile||1–0||2–0||Friendly|
|4.||8 September 1993||Rico Pérez, Alicante, Spain||Chile||2–0||2–0||Friendly|
|5.||29 March 1995||Sánchez Pizjuán, Seville, Spain||Belgium||1–0||1–1||Euro 1996 qualifying|
|6.||6 September 1995||Los Cármenes, Granada, Spain||Cyprus||1–0||6–0||Euro 1996 qualifying|
|7.||20 September 1995||Vicente Calderón, Madrid, Spain||Argentina||2–0||2–1||Friendly|
|8.||18 December 1996||Ta' Qali, Attard, Malta||Malta||0–1||0–3||1998 World Cup qualification|
|9.||18 December 1996||Ta' Qali, Attard, Malta||Malta||0–2||0–3||1998 World Cup qualification|
|10.||18 December 1996||Ta' Qali, Attard, Malta||Malta||0–3||0–3||1998 World Cup qualification|
|11.||8 September 1999||Vivero, Badajoz, Spain||Cyprus||3–0||8–0||Euro 2000 qualifying|
|12.||8 September 1999||Vivero, Badajoz, Spain||Cyprus||5–0||8–0||Euro 2000 qualifying|
|13.||8 September 1999||Vivero, Badajoz, Spain||Cyprus||6–0||8–0||Euro 2000 qualifying|
- Spain U21
- "Leyendas del Athletic Club de Bilbao – Guerrero" [Athletic Club de Bilbao legends – Guerrero] (in Spanish). El Correo. Retrieved 23 May 2016.
- Guerrero pride at Athletic honour; UEFA.com, 24 October 2006
- Spain – Footballer of the Year; at RSSSF
- "Julen Guerrero vive su temporada más amarga en el Athletic" [Julen Guerrero goes through most bitter season in Athletic] (in Spanish). El País. 5 December 1998. Retrieved 27 January 2016.
- Guerrero says goodbye at Athletic; UEFA.com, 11 July 2006
- "Los discípulos de Pichichi" [Pichichi's disciples] (in Spanish). El Correo. 9 October 2015. Retrieved 11 February 2016.
- "Más joven, pero igual de gris" [Younger, but just as grey] (in Spanish). Mundo Deportivo. 28 January 1993. Retrieved 20 December 2014.
- "España golea 8–0 a Chipre y pasa a la fase final de la Eurocopa" [Spain routs Cyprus 8–0 and qualifies to Eurocup finals] (in Spanish). El País. 9 September 1999. Retrieved 22 April 2014.
- Julen Guerrero – Goals in International Matches; at RSSSF
- "El hermano de Julen Guerrero mantiene al Éibar arriba" [Julen Guerrero's brother keeps Éibar up] (in Spanish). El País. 21 October 1996. Retrieved 27 January 2016.
- Beatriz Ortiz (19 December 2008). "Qué fue de... Julen Guerrero, el símbolo del Athletic" [What happened to... Julen Guerrero, Athletic's symbol] (in Spanish). Cadena SER. Retrieved 27 January 2016.
- Includes other competitive competitions, including the Supercopa de España, UEFA Super Cup, FIFA Club World Cup.