Jaime Vallejo Mellado (born 18 May 2002) is a Spanish footballer who plays as a right-back for Deportivo Aragón. Career. Born in Tudela, Navarre, Vallejo joined Real Zaragoza's youth categories in 2017, from CD Corellano. He made his senior debut with the reserves on 21 March 2021, starting in a 0–0 Tercera División away draw against SD Huesca B. Vallejo scored his first senior goal on 14 November 2021, netting the B's second in a 3–0 Tercera División RFEF home win over Atlético Monzón, and was a regular starter for the side during the season as they achieved promotion to Segunda Federación. In April 2024, he suffered a knee injury during a match for the B-side. On 30 July 2024, Vallejo renewed his contract with the "Maños". He returned to action in January 2025, and made his first team debut on 7 February of that year, coming on as a late substitute for fellow youth graduate Adrián Liso in a 2–1 Segunda División away loss to Albacete Balompié.