Lower-league footballer Tim Nicot has become the second Belgian player to die of cardiac arrest in the last two weeks.
The 23-year-old left-back for fourth-tier Wilrijk-Beerschot was playing in a tournament in Hemiksem when he collapsed on Friday.
BBC reported that he was placed in an induced coma and his club confirmed his death on Monday.
In late April, Lokeren defender Gregory Mertens, 24, died after collapsing during reserve game.
Three years ago Bolton midfielder Fabrice Muamba, then 23, suffered a cardiac arrest in an FA Cup game with Tottenham. He was “in effect dead” for 78 minutes but survived, although he never played again.