Mark Williams made four centuries en route to round two ©Getty Images

Three-time winner Mark Williams is safely through to the second round of the World Snooker Championship, with Mark Allen and Anthony McGill also advancing.

Williams defeated Michael White 10-3 in an all-Welsh clash at Sheffield's Crucible Theatre.

Four centuries - including a 121 which wrapped up the win - helped Williams outclass amateur player White.

Williams has set up another all-Welsh encounter in round two, this time versus 20-year-old World Championship debutant Jackson Page.

Allen and McGill are both past semi-finalists in Sheffield.

Northern Ireland's Allen saw off Scotland's Scott Donaldson 10-6.

Scotland's McGill triumphed 10-7 over Liam Highfield of England.

In first-round matches still ongoing, 2015 champion Stuart Bingham made the biggest century of the event to date - 140 - on his way to a 6-3 lead over China's Lyu Haotian.

Australia's Neil Robertson, victorious here in 2010, leads Englishman Ashley Hugill by the same scoreline.

Hugill had been 3-1 up before Robertson launched a fightback.