SHEFFIELD, England, April 20 (Xinhua) -- Following are the results from the opening day's competition of the World Snooker Championship at the Crucible Theatre in Sheffield on Saturday (best of 19 frames in first round):

Mark Williams, Wales, bt Martin Gould, England, 10-7

After first session

Luca Brecel, Belgium, leads Gary Wilson, England, 5-4

Neil Robertson, Australia, leads Michael Georgiou, Cyprus, 9-0

Ding Junhui, China, leads Anthony McGill, Scotland, 6-3

Tian Pengfei, China, leads Stephen Maguire, Scotland, 5-4

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