Born in Dos Hermanas, Province of Seville, Velasco started representing professionally local giants Sevilla FC, appearing in 13 La Liga matches in the 1996–97 season, which ended in relegation.
His league debut occurred on 5 March 1997 in a 2–0 away loss against Rayo Vallecano, and in the following two years he totalled 72 official appearances, contributing prominently in the second as the Andalusians returned to the top flight.
[1] On 18 February 2008, the free agent signed a three-month contract with Championship side Norwich City after a successful trial.
[1] After one and a half seasons, Velasco moved teams in January 2010 but stayed in the country, with Athlitiki Enosi Larissa FC.
[6] Velasco was capped five times by Spain,[1] his debut coming on 26 January 2000 in a 3–0 friendly win over Poland in Cartagena.