The biggest win ever recorded in La Liga was on June 14, 1931, when Athletic Bilbao defeated Barcelona FC by a score of 12-1.
This was a historic match for both clubs, as it was the first time that Athletic Bilbao had defeated Barcelona in the top flight of Spanish football.
The match was played at San Mames Stadium in Bilbao, and featured some of the greatest players of the time, including Athletic Bilbao’s forward Guillermo Gorostiza, who scored an impressive seven goals in the match. Barcelona FC, on the other hand, was unable to keep up with Athletic Bilbao’s high-scoring attack, and suffered their worst defeat in the club’s history.
The match was widely considered to be a major upset, as Barcelona FC was one of the strongest teams in Spanish football at the time, while Athletic Bilbao was relatively unknown. However, the match proved to be a turning point for Athletic Bilbao, who went on to become one of the most successful clubs in La Liga, winning the league title a total of eight times.
In the years since this historic match, there have been several other large victories in La Liga, but none have come close to matching the scale of Athletic Bilbao’s 12-1 win over Barcelona FC. This match remains one of the most memorable and significant in the history of Spanish football, and is a testament to the strength and skill of both clubs.