Jahangir Khan was a six-time world champion during the 1980's, in which sport?

Jahangir Khan, born 10 December 1963 in Karachi, Pakistan is a former World No. 1 professional squash player from Pakistan, who is considered to be the greatest player in the history of squash. During his career he won the World Open six times and the British Open a record ten times. From 1981 to 1986, he was unbeaten in competitive play. During that time he won 555 matches consecutively, the longest winning streak by any athlete in top-level professional sports as recorded by Guinness World Records.

In 1981, when he was 17, Jahangir became the youngest winner of the World Open, beating Australia's Geoff Hunt (the game's dominant player in the late-1970s) in the final. The hallmark of his play was his incredible fitness and stamina, which Rehmat Khan helped him build up through a punishing training and conditioning regime. Jahangir was quite simply the fittest player in the game, and would wear his opponents down through long rallies played at a furious pace.