Marco Fu crashed out on the opening day of the 2016 World Open following a 5-3 defeat by world number 108 Sam Craigie, while Kurt Maflin scraped past Michael White 5-4 on the final black in Yushan.
In just his third tournament since returning to the tour, Craigie came flying out of the blocks with breaks of 112 and 68 giving him a 2-0 lead.
World number 12 Fu bounced back, though, with runs of 61, 73 and 94 levelling the scores at 3-3, before he had a chance to move in front after a break of 60 in the next.
However, Newcastle’s Craigie eventually took it on the black and the 22-year-old wasted no time in wrapping up the best victory of his professional career.
White also fell at the first hurdle as he squandered a 4-2 advantage before being edged out by Maflin.
The Welshman looked to be in really good form – hitting back-to-back centuries on his way to going two up with three to play – but his Norwegian opponent responded with a run of 115 to force a decider.
World number 19 White was on course to clear up for victory but missed the brown, allowing Maflin back in to snatch a last 32 place in the most dramatic fashion.
He will now play Xiao Guodong, who was pegged back three times before eventually battling past Stephen Maguire by the same scoreline, while Thepchaiya Un-Nooh fought back from 4-2 down to squeeze past Mark King.
Stuart Bingham and Barry Hawkins also had to dig deep as they survived scares on Monday, coming from 3-1 and 3-0 to eventually see off Stuart Carrington and Robbie Williams respectively.
Masters finalist Hawkins set up a showdown with Ryan Day, who made a top break of 85 in his 5-3 victory over Allan Taylor.
Meanwhile, Tom Ford produced an astonishing comeback against Mark Davis – recovering from 4-0 down with breaks of 73, 72, 76, 62 and 69 to stun the World Seniors champion.
Elsewhere, there were no such problems for world number one Mark Selby or defending champion Shaun Murphy, who respectively eased past Jimmy White and Sanderson Lam 5-1, while two-time Crucible king Mark Williams made breaks of 135 and 101 on his way to beating Andrew Higginson by the same scoreline.
Home favourite Ding Junhui closed out his 5-3 victory over Michael Georgiou with a stunning 117 clearance, while the same margin saw world number 16 Kyren Wilson overcome Zhang Yong.
Indian Open champion Anthony McGill continued his momentum with two centuries in his 5-1 success over Lee Walker, and David Gilbert also enjoyed a brace of tons as he whitewashed Rod Lawler 5-0.
World Championship semi-finalist Alan McManus showed great determination from 3-1 down to beat Jamie Cope 5-3, while Ben Woollaston hit back from 2-0 behind by reeling off five straight frames against Gary Wilson.
Earlier in the day, Matthew Stevens, Jimmy Robertson and home favourite Liang Wenbo all enjoyed 5-1 victories over Liu Yiqi, Wang Yuchen and Chris Wakelin respectively, as fellow local players Huang Jiahao, Zhang Anda and Xu Si each progressed by 5-3 scorelines.
World Open 2016 Results
Monday July 25
Round One (WC + Wildcard Match)
3 Hammad Miah 3-5 Huang Jiahao (WC)
4 Zhang Anda 5-3 Hu Hao (WC)
5 James Wattana 3-5 Xu Si (WC)
6 Matthew Stevens 5-1 Liu Yiqi (WC)
7 Liang Wenbo 5-1 Chris Wakelin
10 Jimmy Robertson 5-1 Wang Yuchen
11 Stephen Maguire 4-5 Xiao Guodong
25 Stuart Bingham 5-4 Stuart Carrington
8 Mark Selby 5-1 Jimmy White
13 Tom Ford 5-4 Mark Davis
15 Gary Wilson 2-5 Ben Woollaston
21 Rod Lawler 0-5 David Gilbert
27 Kyren Wilson 5-3 Zhang Yong
34 Anthony McGill 5-1 Lee Walker
35 Marco Fu 3-5 Sam Craigie
39 Mark King 4-5 Thepchaiya Un-Nooh
1 Shaun Murphy 5-1 Sanderson Lam
2 Ding Junhui 5-3 Michael Georgiou
12 Michael White 4-5 Kurt Maflin
19 Barry Hawkins 5-4 Robbie Williams
20 Ryan Day 5-3 Allan Taylor
30 Andrew Higginson 1-5 Mark Williams
37 Jamie Cope 3-5 Alan McManus