> Doctors have been unable to save a hockey player who suddenly collapsed on the ice during a game in Slovakia. > Boris Sadecki was playing for the Bratislava Capitals, of the Ice HL, when he fell to the floor during a match against the Dornbirn Bulldogs on October 29. > Medics are said to have spent several minutes attending to the 24-year-old, resuscitating him before transporting him to hospital, where he had spent 11 days before his passing was announced. > Abou Ali, 22, professional footballer collapses on pitch during game > Fabrice NSakala, 31, Besiktas defender collapses on pitch during game > Jens De Smet, 27, footballer collapses on field, passes away of heart attack > Jente van Genechten, 25, footballer collapses on field due to heart attack > Frederic Lartillot, French footballer collapses in changing room, passes away due to heart attack after game > Benjamin Taft, 31, German footballer collapses after game, passes away due to heart attack > Rune Coghe, 18, Belgian footballer suffers cardiac arrest on pitch > Helen Edwards, referee taken off court during World Cup qualifier due to heart issues > Dimitri Lienard, 33, FC Strasbourg midfielder collapses during game > Sergio Aguero, 33, Barecelona star striker admitted to hospital for cardiac exam after match > Emil Palsson, 28, Sognal midfielder collapses due to cardiac arrest during game > Antoine Méchin, 31, French triathlete suffers pulmonary embolism following Moderna > Luis Ojeda, 20, Argentine football player unexpectedly passes away > Greg Luyssen, 22, Belgian pro cyclist ends career due to heart issues > Pedro Obiang, 29, ex-West Ham star suffers myocarditis post vaccine > Carl Madsen, 71, NFL referee dies of heart attack after working the Chiefs-Titans game.