MARC-VIVIEN FOE, JUNE 2003
Cameroon midfielder Foe collapsed after a heart attack during a Confederations Cup semi-final against Colombia in Lyon, France.
The former Manchester City, West Ham and Lyon player was carried from the pitch as medical staff tried to revive him.
After trying to restart his heart for 45 minutes without success he was declared dead, aged just 28.
His death prompted improvements in both the testing of footballers for heart problems and the treatment they can receive during matches, including training club medical teams in cardiopulmonary resuscitation.
ANTONIO PUERTA, AUG 2007
Spain international Puerta, 22, collapsed while playing for Sevilla in a LaLiga match against Getafe and died three days later from multiple organ failure stemming from prolonged cardiac arrest.
It was only three months after the wing-back had helped Sevilla to win the Uefa Cup.
PHIL O'DONNELL, DEC 2007
The Motherwell captain died of heart failure towards the end of his side's 5-3 Scottish Premier League win over Dundee United in December 2007.
The 35-year-old midfielder collapsed just as he was about to be substituted.
He also played for Scotland, Celtic and Sheffield Wednesday during his career and his death caused widespread grief in Scottish football.
DANIEL JARQUE, AUG 2009
The 26-year-old had been appointed Espanyol captain a month before he died of a heart attack in his hotel room during a pre-season trip to Coverciano in Italy.
In the 2010 World Cup final, Barcelona's Andres Iniesta, who played with him for the Spain U-21 side, celebrated his extra-time winner against the Netherlands by revealing a T-shirt with the words "Dani Jarque siempre con nosotros" (Dani Jarque always with us).