1, Kim Duk-Koo
Kim Duk-Koo (January 8, 1955 – November 18, 1982) was a South Korean boxer who died following a world championship boxing match against Ray Mancini.
2. Ayrton Senna
Brazilian F1 driver Senna's is perhaps the most famous on-field death in sporting history. The 3-time world champion was a legend in the sport even before his untimely death at the 1994 San Marino Grand Prix.
3. Miklós Fehér
Miklós "Miki" Fehér (Hungarian pronunciation: [ˈmikloːʃ ˈfɛheːr]; 20 July 1979 – 25 January 2004) was a Hungarian professional footballer who played as a striker.
Eduardo Gory "Eddie" Guerrero Llanes (October 9, 1967 – November 13, 2005) was an American professional wrestler born into the Guerrero wrestling family. He wrestled in Mexico and Japan for several major professional wrestling promotions.
Marco Simoncelli (Italian pronunciation: [ˈmarko simonˈtʃɛlli]; 20 January 1987 – 23 October 2011) was an Italian professional motorcycle racer. He competed in the Road Racing World Championship for 10 years from 2002 to 2011. He started in the 125cc class before moving up to the 250cc class in 2006.