[1] He made his senior debut with the reserves on 8 November 2015, starting in a 1–1 Segunda División B home draw against UD Melilla.
[2] Martos scored his first senior goal on 18 February 2017, netting his team's second in a 3–2 home win against River Melilla CF in the Tercera División.
[3] He made his first-team debut on 11 September 2018, starting in a 2–1 away defeat of Málaga CF in the season's Copa del Rey.
[6] On 5 October 2020, Martos moved to fellow second division side Rayo Vallecano on a one-year loan deal.
Martos returned to trainings in October 2022,[9] and was loaned to FC Cartagena in the second division on 19 January 2023, for the remainder of the season.