Lin Dan

Lin Dan is a Chinese professional badminton player. He is a two-time Olympic champion, five-time world champion and a six-time All England champion. He is widely regarded as the greatest singles player of all time, and by the age of 28 had completed the "Super Grand Slam", having won all nine major titles in the badminton world: Olympic Games, world championships, world cup, Thomas Cup, Sudirman Cup, Super Series Masters Finals, All England Open, Asian Games, and Asian Championships, becoming the first and only player to achieve this feat. He also became the first men's singles player to retain the Olympic gold medal by winning in 2008 and defending his title in 2012.