Former Osasuna executive Angel Vizcay was sentenced to eight years and eight months in prison for match-fixing on Friday.
Vizcay was found guilty of sporting fraud, misappropriation and falsifying documents and accounts in what is Spain's first ruling of sentencing in a match-fixing case.
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He was one of nine people found guilty of conspiring to fix the result of La Liga games in order to help Osasuna avoid the drop in the 2013-14 campaign.
Former Real Betis player Jordi Figueras and ex-Osasuna foundation director Diego Maquirriain were cleared of wrongdoing by a court in Pamplona.
Ex-Osasuna president Miguel Archanco was sentenced to six years and eight months in prison while former Osasuna vice-president Juan Antonio Pascual received a sentence of six years and six months.
Former Betis players Antonio Amaya and Xabier Torres have each been handed a one-year prison sentence and two years of disqualification from football. The two were also handed fines of €900,000.
The sentences can be appealed in Spain's supreme court.
The basis of the "Osasuna case" trial is on the €650,000 that Betis received from Osasuna in the 2013-14 campaign, the €400,000 to beat Valladolid in the 37th round and the €250,000 to lose against Osasuna in the final round of games.
Vizcay testified during the two-month trial that Osasuna paid thousands to La Liga clubs between 2012 and 2014 to help the club avoid relegation.
Osasuna finished 16th in the 2012-13 campaign but despite winning 2-1 against Betis in the last round of the 2013-14 campaign, they did not avoid relegation, finishing 18th in the table.
Those found guilty will have to compensate Osasuna €2.34m, which is the amount of funds that came out from the club accounts irregularly during the 2012-13 and 2013-14 campaign.
Osasuna gained promotion to La Liga in May 2019 and are 13th in the table after 20 games played.