Seba was born in Zaragoza, Aragon. He made his professional – and La Liga – debut at the age of 18 for local Real Zaragoza, in a 1–1 draw against Real Sociedad. He would garner praise for his early performances, ultimately leading to a call-up for the Spain under-21 team – notably scoring twice against Boldklubben Frem for the 1992–93 UEFA Cup. However, in March 1993, Seba suffered a serious ankle tear when attempting a turn in a Copa del Rey match. The injury would stunt his development and later prove a turning point in his career, as he would figure sparingly in top flight football during the following seasons. After a loan in Segunda División with Villarreal CF, Seba was released by Zaragoza and moved on a free transfer to England's Wigan Athletic, for the start of the 1995–96 campaign.
Wigan Athletic
Seba came to Wigan as one of the 'Three Amigos', alongside Roberto Martínez – also his teammate at Zaragoza – and Isidro Díaz, drafted in by new chairman Dave Whelanin the summer of 1995. The signings were a real coup for an English Third Division club, especially considering Football League teams rarely searched for talent abroad in the mid-90s and that Seba was also an under-21 international. 'Jesus is a Wiganer' was an early joke at the club, and Spanish flags adorned Springfield Park on matchdays as Spanish fever gripped the town's football supporters. Seba scored his first goal with his first touch in a pre-season friendly, and played his first competitive game in the season opener against Gillingham. His first official goal arrived in his first match at home, a 2–1 defeat of Scunthorpe United. Following a series of good results, aided by a string of impressive performances from Seba, Wigan were made early favourites for the Third Division championship. Mid-season, however, he found himself on the fringes of the first team, and with their league position only 'satisfactory', Graham Barrow was sacked following a 2–6 loss at Mansfield Town; caretaker managerFrank Lord reinstated the player to the first team, and oversaw a 4–0 win over Exeter City in which the latter scored twice. Seba was immediately dropped by new manager John Deehan, however, and would later see his appearances limited to mainly substitute roles as he struggled to find form in the latter half of the campaign. He made just two appearances, both from the bench, and played his final game for Wigan on 7 September 1996, 30 minutes against Scunthorpe. Seba then had trials at Burnley and Bristol Rovers, before being allowed to leave the club by Deehan in October 1996, having started 11 times and featuring from the bench on 16 further occasions. He found it most difficult to settle of the three Spaniards, and his struggle to grasp the English language was another contributory factor in his departure.
Seba returned to his country and Zaragoza in the 1997 January transfer window, but spent almost two years appearing for the reserve team, only playing for the main squad during the 1–3 home loss to SD Compostela in the final day of the season. He then had a four-year spell in Portugal, playing for G.D. Chaves and C.F. Os Belenenses, where a heart condition whilst with the latter put his career on hold. Seba eventually recovered, but spent his later years in Segunda División B or lower – during his four-year stint at amateur Andorra CF, he served as captain and was a highly popular figure. After considering retirement at the end of 2008–09, Seba decided to return to CD Oliver. Upon joining, he expressed his desire to finish his career at the club at which he began more than 20 years earlier.
