Shanghai Masters: Mark Williams beaten by Barry Hawkins in last eight
World champion Mark Williams lost 6-4 to Barry Hawkins in the quarter-finals of the Shanghai Masters.
Williams could not follow up his China Open success in August.
Another Welshman Ryan Day lost 6-5 Kyren Wilson in his last eight match.
Wilson, Shanghai Masters winner in 2015, secured victory in the final frame with a break of 135.
He will face defending champion Ronnie O'Sullivan in the semi-finals.