 Complete the following phrase:  In September 1965, John Pulman and Rex Williams left England to play a series of 51 seven-frame matches in South Africa for the World Championship. The number of matches was later reduced to 49 and in December Pulman took a winning lead of 2520 to retain the title. Eventually only 47 matches were played, with Pulman winning the series 2522. In the 24th match of the series, played in November in the South African city of East London, Williams compiled a break of 142, breaking the official tournament record of 136 set by Joe Davis in 1946. Although equalled by Bill Werbeniuk in 1979, this remained the highest break at the World Championship until Doug Mountjoy compiled a 145 in the 