Francisco Gabriel Guerrero

Guerrero advanced from the U-20 team to Independiente's first team in 1994. In 2001 he was transferred to Switzerland and joined FC Zurich under head coach Georges Bregy. He played with them on occasion, but not regularly. After two and a half seasons he was loaned out. On 12 February 2004 he signed a half-year loan contract with FC Basel. The club were looking for replacements for the two Swiss internationals Marco Streller and Hakan Yakin who both transferred to VfB Stuttgart. Guerrero joined Basel's first team during their 2003–04 season under head coach Christian Gross. Guerrero was the fourth Argentinian in the team, joining Christian Giménez, Matías Delgado and Julio Hernán Rossi. Gross let Guerrero sit on the bench in every one of the last 18 matches of the season and used him as substitute on 13 occasions, usually as replacement for one of his three countrymen. Guerrero played his domestic league debut for the club in the away game in the Stadion Neufeld on 15 February 2004 as Basel won 1–0 against Young Boys. He scored his first and only goal with the team in the home game in the St. Jakob-Park on 28 February. It was the last goal of the game as Basel won 6–0 against Xamax. Despite the away win to the start of the second half of the season, the team was not as steadfast as it had been before the winter break. Basel ended the season undefeated at home, but were beaten three times away, nevertheless they won the championship with 13 points advantage over their nearest…

He won 1995 FIFA World Youth Championship.

Basel

Swiss Super League: 2003–04 FC Zürich

Swiss Cup: 2004–05