BRISBANE, AUSTRALIA – Australian Michael Klim broke the 100m butterfly world record at the Australian World Championship Trials on Thursday. The 20-year-old clocked 52.15 seconds to better Russian Denis Pankratov’s previous world mark. Pankratov set the former world record of 52.27 seconds to win the gold medal at last year’s Olympic Games. Klim’s time at the Chandler Aquatic Center came after a controversial false start when the finalists swam 65 meters before being stopped by officials. Swimmers had to wait another 20 minutes before taking to the blocks for a second time.