|Full name||Joseba Arriaga Dosantos|
|Date of birth||28 July 1982|
|Place of birth||Ermua, Spain|
|Height||1.71 m (5 ft 7 in)|
|2005–2006||→ Eibar (loan)||28||(1)|
|2010||→ Alavés (loan)||19||(7)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 5 March 2017.
Born in Ermua, Biscay, Arriaga emerged through Athletic Bilbao's youth system at Lezama, and was promoted to the first team for the 2002–03 season, having an immediate impact: he made his club debut in a friendly against feeder club CD Basconia on 26 July 2002, replacing Julen Guerrero. Roughly one month later he first appeared in La Liga, playing the full 90 minutes against Real Sociedad in a local derby (2–4 away loss).
Arriaga's importance would drastically diminish in the following campaign, being only third or fourth-choice in the offense, and eventually had to resume his career in the second division, with SD Eibar and UD Las Palmas, following which he had two steady years with Real Jaén – but in the third level.
After a good second year, Arriaga stayed in Andalusia but moved to Cádiz CF, freshly returned to division two. He was loaned to Deportivo Alavés in the third division in the 2010 winter transfer window after receiving very few opportunities, and alternated in the following years between the second and third levels of Spanish football, with AD Ceuta, CD Guadalajara and Gimnàstic de Tarragona.
- Apuntes de genio (Glimpse of a genius); Mundo Deportivo, 2 September 2002 (Spanish)
- Joseba Arriaga ficha para reforzar la delantera cadista (Joseba Arriaga signs to strengthen cadista offense); Marca, 2 July 2009 (Spanish)
- El delantero Joseba Arriaga llega cedido al Alavés hasta final de temporada (Forward Joseba Arriaga arrives on loan to Alavés until the end of the season); ABC, 8 January 2010 (Spanish)
- Joseba Arriaga, segundo fichaje del Deportivo Guadalajara (Joseba Arriaga, second Deportivo Guadalajara signing); Guadalajara Dos Mil, 15 July 2011 (Spanish)
- Joseba Arriaga, el último retoque (Joseba Arriaga, last touch); Diari de Tarragona, 31 August 2012 (Spanish)
- Las tres primeras bajas en el Nàstic (Nàstic's first three releases); Diari de Tarragona, 21 December 2012 (Spanish)
- El exrojiblanco Arriaga, al Barakaldo (Former rojiblanco Arriaga, to Barakaldo); El Correo, 22 January 2013 (Spanish)
- Joseba Arriaga ficha por la SD Amorebieta (Joseba Arriaga signs for SD Amorebieta); Vavel, 22 May 2014 (Spanish)