Japanese swimmer Kosuke Kitajima has broken the 10-year-old 200m world breaststroke record at the Asian Games in Busan. The world championship bronze medallist, who is also the Asian record holder came home in 2:09.97. He won by a massive 3.5 seconds to smash the mark of 2:10.16 set by American Mike Barrowman in Barcelona in 1992.