for the Real Zaragoza B team in 1991, but spent most of his first three seasons at the club playing for the youth teams. On 20 June 1993, he made his debut for the first team in La Liga on the final day of the 1992–93 season in a 2–2 draw with Atlético Madrid, coming onto the pitch as a substitute for Luis Cuartero in the 55th minute. During the following season, Martínez featured more regularly for the B team, helping the team regain promotion to the Segunda División B after being relegated in the previous season. In 1994, he returned to Balaguer to play for the first team, and also ran a football school for the club as an alternative to military service. Martínez was offered the chance to move to England by Dave Whelan, Chairman of Wigan Athletic, and he signed on a free transfer on 25 July 1995, joining fellow Spaniards Jesús Seba and Isidro Díaz, who were collectively referred to as the "Three Amigos". He made his debut on 12 August 1995 against Gillingham, scoring for Wigan in a 2–1 defeat. He finished the 1995–96 season as the club's top goalscorer with 13 goals in all competitions, and his impressive performances were recognised when he was named in the Division Three PFA Team of the Year, and was also voted by the supporters as the club's Player of the Year. Martínez won his first honours at the end of the following season, in 1996–97, when Wigan finished as Division Three Champions. He was once again named in the Division Three PFA Team of the Year, and was rewarded with a new four-year contract. Martínez was also at Wigan when the team won the Football League Trophy in 1999, for which he received a winners' medal despite being injured when the final was played. Released by Wigan on a free transfer at the end of the 2000–01 season, Martínez signed a three-year deal with Scottish club Motherwell in July 2001. He made only eight appearances, plus eight more as a substitute, before having his contract terminated at the end of the season after the club had entered administration a week earlier. He moved back to England to join First Division club Walsall on a free transfer in August 2002. Again, he did not feature regularly, starting just one game for Walsall (a home match against Reading, in