Trump trails his 20-year-old opponent 5-3 after the first session in their best-of-25 encounter – although it could have been worse had he not clinched the final frame.

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Yan, who has lost all five previous meetings with Trump, made a total clearance of 133 and breaks of 91 and 93 in an impressive display.

Trump is bidding to become the maiden first-time champion to defend a world title in the Crucible era.

Yan Bingtao makes 133 total clearance at World Snooker Championship

Meanwhile, Stuart Bingham and Mark Williams are locked at 8-8 ahead of their final session.

Bingham rattled off four frames on the spin to turn 3-6 into 7-6, but three-time world champion Williams belatedly stemmed the tide to keep his hopes on track.

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