LONDON - Sun Yang of China broke his own men's 1500 metres freestyle world record.

Sun clocked 14:31.02 in the final to beat the 14:34.14 that he set at last year's Wolrds.

World record evolution (Time, Name/Nationality, Place, Date):
14:31.02 Sun Yang CHN London 04.08.12
14:34.14 Sun Yang CHN Shanghai 31.07.11
14:34.56 Grant Hackett AUS Fukuoka 29.07.01
14:41.66 Kieren Perkins AUS Victoria 24.08.94
14:43.48 Kieren Perkins AUS Barcelona 31.07.92