 Complete the following phrase:  His 18-month period of domice ended at the 1982 World Snooker Championship, where he lost 110 to Tony Knowles in the first round. Despite this, he finished the season as the world number one for the first time. Davis lost to Griffiths in the quarter-finals of the 1982 UK Championship later that year. After those two defeats, he won the World Doubles Championship with partner Tony Meo. He overcame Thorburn 186 in the 