[2] He made his debut for the first team against CF Badalona in a Copa del Rey second-leg match, coming on as a substitute for Juliano Belletti at half time of the 4–0 home win.

[5] On 21 November 2009, injuries to the first squad, mostly Federico Fazio, granted Valiente his first La Liga opportunity, as he started in the 2–1 away win against CD Tenerife.

[6] He appeared in two more games during the campaign – replacing injured Adriano before the 30-minute mark of the 1–0 win at Sporting de Gijón,[7] and playing the first half away to eventual champions Barcelona (0–0 at halftime, 4–0 defeat)[8]– being released by Sevilla in June 2010 and signing for three years with Real Valladolid, recently relegated to the second division.

[10] He contributed 33 games, nearly 3,000 minutes of action and one goal[11] in his second year, as the Castile and León side returned to the top flight after a two-year absence.

[27][28] On 30 December 2013 he earned his first and only cap for the Catalonia regional team, starting in the 4–1 defeat of Cape Verde held at the Estadi Olímpic Lluís Companys.