Deportivo La Coruna president Augusto Cesar Lendoiro believes match-fixing is rife in La Liga, but insists his club are not involved.
He made the claims at a Europa Press event in Madrid on Thursday, and suggested that many decisive games in the tail-end of the season are thrown.
Lendoiro blamed match-fixing for Deportivo's relegation from La Liga in 2011 and said it is a known fact that teams receive payments to lose games in order to aid other sides relegation battles.
"Almost all the final matches of the season have been fixed in on way or another," Lendoiro said.
"Let all soccer fans be absolutely clear, Deportivo has never taken part - I will put my neck on the line for the players and the board of directors - in this kind of match-fixing."
Javier Tebas, who was elected president of the LFP in April, spoke at the event and said match-fixing was in "a minority" of one percent, but was still an issue that needs addressing.
"It is a cancer that must be eradicated and it has the same effect," Tebas added.
"If you don't take immediate action it will spread and turn into metastasis and will destroy our sport."