Mike Hallett was whitewashed by a professional snooker player who won the World Championship how many times?
2015 Masters (snooker):  Shaun Murphy won his first Masters title, beating Neil Robertson 10–2 in the final, the biggest winning margin in a Masters final since Steve Davis whitewashed Mike Hallett 9–0 in 1988. Steve Davis: Steve Davis, {'1': ", '2': ", '3': ", '4': "} (born 22 August 1957) is an English retired professional snooker player from Plumstead, London. Steve Davis:  Known for dominating the sport during the 1980s, when he won the World Championship six times and was ranked world number one for seven consecutive seasons, he is remembered particularly for contesting the 1985 World Championship final with Dennis Taylor, the black-ball conclusion of which attracted a record 18.5 million British viewers.
i don't know