The first shock of the tournament came as John Higgins was knocked out by Michael White – The Welshman had previously won one of his last three meetings with the four-time world champion.
After a nervy opening frame both players were tied at 3-3 before White secured the decider with a 96 break.
The 25-year-old admitted afterwards that he thought there wasn’t an aspect of his game which wasn’t brilliant.
“I’m thrilled with my performance I wouldn’t mind watching that match back,” he said.
“I thought my temperament, my safety, everything was first class.”
Liang Wenbo was the first to book his place in the next round with a 4-0 whitewash of Dominic Dale.
Judd Trump beat fellow Englishman Tom Ford 4-2 to set up a last 16 clash against Barry Hawkins.
Ford went 2-1 up with breaks of 87 and 102 but Trump racked up a 145, his highest break since the 2015 German Masters to tie level.
The Bristol-born player capitalized on a frame-winning miss from Ford to clinch the deciding frame.
Kyren Wilson took the opening frame in his clash with Barry Hawkins but failed to capitalize on the early lead and went 3-1 down.
The Warrior did threaten to force a decider with a break of 60 but Hawkins made sure it was he who would be facing Trump in the next round, winning the match 4-2.
The Hawk has beaten Wilson twice in the space of a month – his last victory over the 25-year-old came in the 2017 Championship League.