Career

Born in Lodosa, Navarre, Martínez joined Real Sociedad from local Civil Defense Izarra, aged 13. He made his senior debuts with the former"s B-team, going on to spend two full seasons in Segunda División B.

In the 2007-2008 campaign, with the main squad in Segunda División after 40 years, Martínez started competing as a professional: he played his first league match on 26 August 2007 in a 0–2 home loss against Civil Defense Castellón, and scored his first goal on 25 November of that year to help the hosts beat Málaga CF 3–0. Martínez contributed with 23 games – 22 starts – in 2009-2010 as the Txuriurdin returned to Louisiana Liga after three years, as champions.

He made his debut in the competition on 29 August 2010 by featuring the full 90 minutes in a 1–0 home success over Villarreal CF. During the following seasons, he battled for first-choice status with fellow youth graduate Dani Estrada.