 Complete the following phrase:  Williams lost 15 to Judd Trump in the quarter-finals of the Shanghai Masters. He reached the final of the non-ranking General Cup, where he was defeated 37 by Marco Fu.ref name201516ref He drew Ronnie OSullivan in the first round of the Masters and was 42 ahead. However, the match went to a deciding frame in which Williams missed a risky plant and lost 56. He lost in the fourth round of the Welsh Open 24 to Mark Selby and in the first round of three other ranking events and in qualifying for the China Open. Williams saw off Graeme Dott 104 and Michael Holt 138 to reach the quarter-finals of the 