Michael Phelps Sets 400 Meters Individual Medley Record On this day, in 2008 Michael Phelps sets world record in the 400 metres individual medley swimming event at the Games of the XXIX Olympiad in China. August 10, 2008 Sport: Swimming Trivia Which Nations Won the Gold, Silver and Bronze Medals the Last Time Baseball Was an Olympic Sport? What Are the Five Events That Make Up the Modern Olympic Pentathon? sports in this article Swimming tags in this article Fan On This Day SportsEngine