Jarque, 26, died of heart failure at his team's hotel in Bologna on Saturday, almost two years after the tragic death of Sevilla's Antonio Puerta due to a similar problem.

Consequently, some players called for better tests in the future as they offered their condolences to Jarque's family.

"It’s a terrible loss. Once again it has been a young lad, with his life in front of him, and I would have preferred to never see it happen again. But here it is once more," Sevilla keeper Andres Palop told a press conference.

"It starts to worry you. We do tests and medicals but it isn’t possible to detect these cases. We hope they will specialize a little more to try and improve the detection so that it doesn’t happen again."

Strange

Another alerting situation occurred in Spain last year when Real Madrid midfielder Ruben de la Red collapsed unchallenged during a cup match.

De la Red's problem is yet to be specifically diagnosed by doctors though, but the 24-year-old won't play until next summer.

"It’s strange there are so many cases in such a short space of time. It makes you think it could happen to anyone," Villarreal and Spain winger Santi Cazorla said.

"Of course it’s something that concerns us. They say it isn’t possible to predict these things, because normally there is no warning, with the exception of what happened to De la Red," said Cazorla's Spain mate Albert Riera.

"It is something they have to start to look at to see of there is some sort of solution."