|Full name||Igor Martínez Caseras|
|Date of birth||19 July 1989|
|Place of birth||Vitoria, Spain|
|Height||1.70 m (5 ft 7 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 18 December 2016.
After beginning his career at hometown's Deportivo Alavés, in the second and third divisions, Martínez moved to Basque neighbours Athletic Bilbao in the summer of 2010, for €200,000 and a three-year contract. He was initially assigned to the reserve side, also in the third level.
On 18 September 2010, Martínez made his official debut with the first-team, starting and playing 70 minutes in a 2–2 away draw against Sporting de Gijón. He only appeared in ten La Liga games in his first two seasons combined, however.
Martínez scored his first goal for Athletic on 30 August 2012, in a UEFA Europa League qualifying round game at HJK Helsinki, netting the last in a 3–3 draw (9–3 aggregate win). Released in 2013, he resumed his career in division two, with CD Mirandés and CD Lugo.
- New signing: Igor Martínez; The Offside, 28 May 2010
- Bilbao hit back for point; ESPN Soccernet, 18 September 2010
- Certificado el pase a la fase de grupos (Group stage guaranteed); Athletic Bilbao, 30 August 2012 (Spanish)