 Complete the following phrase:  Following his world championship victory, Thorburn bought a house in England with the intention of spending more time in Britain. He won the Canadian Open for a third successive year in 1980, defeating Griffiths 1710 in the final, and was part of the Canada Team that reached the final of the 1980 World Challenge Cup, where they lost 58 to Wales. He led Higgins 51 in the semi-final of the 1981 Masters, but lost the match 56. At the 