Bolton's Fabrice Muamba collapses on pitch
17 March 2012 Last updated at 20:11 GMT
Bolton midfielder Fabrice Muamba collapsed during the FA Cup quarter final against Tottenham at White Hart Lane.
Medics treated him on the pitch before taking him to hospital, at which point the game was abandoned.
BBC 5 Live's Ian Dennis, who was commentating on the game, describes what he saw.