China's Chang Bingyu produced a shock and made history at the Welsh Open, knocking out former winner 4-0 Shaun Murphy while becoming only the ninth player in history to make four consecutive century breaks.
The 23-year-old went into the first-round encounter ranked 54th in the world, 46 places below Englishman Murphy.
But that counted for nothing as the 2020 winner's hopes of repeating his feat at Venue Cymru, Llandudno were ended at the first hurdle.
Home hope Jackson Page also won 4-0, his triumph coming against Luca Brecel of Belgium to ensure a second-round spot.
Switzerland's Alexander Ursenbacher suffered the same fate as Brecel, as he lost 4-0 against China's Zhou Yuelong.
England's Stan Moody, 19, did not lose a frame in his first round win over compatriot Jimmy Robertson while another Chinese star, Zhao Xintong, took the first step towards winning a third consecutive ranking event as he beat follow countryman Fan Zhengyi 4-3.
In another whitewash, England's Gary Wilson saw off Iran's Amir Sarkhosh 4-0 while Zhang Anda and Mitchell Mann's encounter was resolved 4-2 in the former's favour as the evening session's players began to home in on their tasks ahead.
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Welsh Open day two
Morning and afternoon session:
- Shaun Murphy 0-4 Chang Bingyu
- Xiao Guodong 4-3 Long Zehuang
- Zhao Xintong 4-3 Fan Zhengyi
- Jack Lisowski 4-2 Louis Heathcote
- Ryan Day 3-4 Bulcsu Revesz
- Zhou Yuelong 4-0 Alexander Ursenbacher
- Zhang Anda v Mitchell Mann
- Jimmy Robertson 0-4 Stan Moody
- Jackson Page 4-0 Luca Brecel
- Gary Wilson 4-0 Amir Sarkhosh
Evening session
- David Gilbert v Robbie McGuigan
- John Higgins v Liu Wenwei
- Elliot Slessor v Sam Craigie
- Chris Wakelin v Liam Pullen
- Kyren Wilson v Liu Hongyu
- Stuart Bingham v Gao Yang