Spain international Antonio Puerta had a suspected heart attack in Sevilla's 4-1 Primera Liga win against Getafe.
The 22-year-old suffered problems midway through the first-half on the opening day of the season in Spain.
Medics prevented Puerta from swallowing his tongue, but he collapsed again after going off and was given cardiac resuscitation before going to hospital.
His condition was described as "very serious" and club president Jose Maria del Nido claimed it was a heart attack.
Team-mate Ivica Dragutinovic was first to Puerta's aid and midfielder Renato said: "We were very frightened, but the doctors knew what they were doing.
"It was difficult to continue playing. This victory is dedicated to Puerta."
Sevilla coach Juande Ramos was in no mood to talk about his side's victory after the match.
"I don't have the mind to speak now. The reason I am here is because we are all professionals, but I have no desire to talk of the game or anything," Ramos said.
"I would like to see the player. The game does not have any importance compared with the health of a player."
Uefa Cup holders Sevilla are set to contest the Super Cup against AC Milan in Monaco on Friday 31 August.
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Cant believe he had a suspected heart attack, hopefully he will be alrite as things like this put football in perspective
