|Full name||Jon Andoni Pérez Alonso|
|Date of birth||5 March 1974|
|Place of birth||Bilbao, Spain|
|Height||1.86 m (6 ft 1 in)|
|Playing position||Centre forward|
|1997||→ Osasuna (loan)||7||(0)|
|1997–1998||→ Hércules (loan)||26||(6)|
|* Senior club appearances and goals counted for the domestic league only|
During his 15-year professional career, in which he represented six clubs, he appeared in 479 games in the two major levels of Spanish football, scoring 95 goals. In La Liga he amassed totals of 168 matches and 29 goals, with Athletic Bilbao and Rayo Vallecano (four seasons apiece).
Born in Bilbao, Biscay, Bolo was a product of Lezama, Athletic Bilbao's youth structure. He first appeared with the first team on 20 February 1994 in a 0–1 away defeat against Real Zaragoza, in what would be his sole La Liga appearance of the season.
After a four-year stint with the Basques (with loans to CA Osasuna and Hércules CF in the second division included), Bolo went on to play for Rayo Vallecano – where he had his most steady period, even playing in the UEFA Cup in the 2000–01 campaign and being joint-top scorer alongside Dimitar Berbatov with seven goals to help his team reach the semi-finals, but also suffering consecutive relegations in his last two years – Gimnàstic de Tarragona and CD Numancia.
In August 2008, Bolo was released by Numancia as the Soria team returned to the top flight, and returned to the Basque region, signing with third level side Barakaldo CF. After only one season he retired from football at the age of 35, becoming his last club's general manager.
Bolo was appointed manager of Arenas Club de Getxo on 18 March 2014, achieving promotion to Segunda División B in his first full season. On 31 May 2018, he was named at the helm of SD Ponferradina, also in the third tier.
|Arenas Getxo||18 March 2014||31 May 2018||173||68||61||44||241||183||+58||39.31|||
|Ponferradina||31 May 2018||Present||11||7||4||0||16||5||+11||63.64|||