Mariño with Valladolid in 2014
|Full name||Diego Mariño Villar|
|Date of birth||9 May 1990|
|Place of birth||Vigo, Spain|
|Height||1.85 m (6 ft 1 in)|
|2014–2015||→ Levante (loan)||32||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 24 April 2017.
Born in Vigo, Galicia, Mariño played for Villarreal CF since the age of 14, having already represented four teams as a youth. He made his professional debuts in the 2010–11 season, helping the reserves barely avoid relegation from the second division while appearing in 38 games.
In the following campaign, Mariño was again first-choice, but as the main squad suffered relegation in La Liga, the B's were forced to drop down to the third level even though the team finished in a comfortable 12th position. After the departures of longtime incumbent Diego López and 41-year-old César (the latter retired), he was promoted to the first team by manager Julio Velázquez – also his boss in the second side.
Valladolid / Levante
On 5 July 2013, Mariño signed a five-year contract with Real Valladolid, with Villarreal retaining an option to buy him back for €300,000. He made his debut in the top flight on 17 August, in a 1–2 home loss against Athletic Bilbao.
On 1 July 2016, after Levante's relegation, Mariño joined Sporting de Gijón for four years. Second-choice to Iván Cuéllar, he made his debut on 26 November in a 1–2 loss at leaders Real Madrid.
In the tournament in Denmark, Mariño was a backup to Atlético Madrid's David de Gea as the nation won its third title in the category. The following year, he repeated the role for the under-23 side in a group stage exit at the Summer Olympic Games in Great Britain.
- Spain U21
- Spain U17
- El vigués Diego Mariño jugará el próximo curso en el Villarreal B (Vigo's Diego Mariño will play next season with Villarreal B); La Voz de Galicia, 9 June 2010 (in Spanish)
- El Real Valladolid ficha al portero Diego Mariño (Real Valladolid signs goalkeeper Diego Mariño); El Norte de Castilla, 5 July 2013 (in Spanish)
- Valverde tastes opening-day win; ESPN FC, 17 August 2013
- Mariño se incorpora a la disciplina del Levante UD (Mariño joins Levante UD's discipline); Levante UD, 8 August 2014 (in Spanish)
- El Levante incorpora a Mariño como cedido (Levante adds Mariño as a loanee); Europa Press, 8 August 2014 (in Spanish)
- Mariño se compromete por el Levante por las tres próximas temporadas (Mariño committs to Levante for the following three seasons); Levante UD, 31 August 2015 (in Spanish)
- La portería rojiblanca se refuerza con Diego Mariño (The red-and-white goal bolsters with Diego Mariño); Sporting de Gijón, 1 July 2016 (in Spanish)
- "A Mariño le espera un complicado debut" [A tough debut awaits Mariño] (in Spanish). El Desmarque. 25 November 2016. Retrieved 8 March 2017.
- "Real Madrid 2–1 Sporting Gijón". BBC Sport. 26 November 2016. Retrieved 8 March 2017.