Ronald Antonio O'Sullivan (born 5 December 1975) is an English professional snooker player from Chigwell, Essex. As a six-time (and reigning) world champion, a record seven-time Masters champion, and a record seven-time UK champion, he is the most successful player in the history of snooker's Triple Crown Series, with 20 titles. He also holds the record for the most ranking titles in professional snooker, with 37, and has won career prize money of over £11.8 million, the most by any player in snooker history.