Four-time BetVictor World Matchplay quarter-finalist Dave Chisnall ran out a comfortable 10-4 winner against Keegan Brown at the Winter Gardens in Blackpool on the opening night
Brown began brightly, leading 3-2 going into the first break before Chisnall began to grow in confidence.
He hit brilliant back-to-back checkouts of 148 and 147 to take the lead for the first time in the contest.
Although Brown levelled at 4-4, Chisnall continued his charge as the former Grand Slam of Darts finalist rattled off the next six legs without reply to seal his place in the last 16 for a sixth year in succession.
“It was tricky and it’s never easy to play Keegan,” said Chisnall.
“The 148 was a big turning point because he was on a double, and I think from then his head went down.
“I’ve got to play a lot better but I’ve done a lot of practise in the last couple of weeks and it’s worked.”
Meanwhile, Jeffrey De Zwaan produced one of the biggest shocks ever seen at the Winter Gardens as he dumped out two-time champion Michael van Gerwen.
Number one seed Van Gerwen was odds-on to win the event before the start of play but fellow Dutchman De Zwaan repeated his UK Open triumph of March with a stunning 10-6 victory.
With Van Gerwen not at his usual brilliant best, the exciting youngster took full advantage, firing in a game-changing 121 checkout to level the tie at 6-6.
De Zwaan then reeled off the next four legs to raise the roof at the Winter Gardens and set up a second round clash with Adrian Lewis.
The opening match of the night saw Lewis survive a scare as he overcame James Wilson 10-8 in a very tense affair.
Lewis started well, taking the opening two legs before the Yorkshireman fought back to lead 7-3 thanks to some clinical double hitting.
The two-time world champion dug deep to get himself back in the contest and went within a leg of victory at 9-8, before hitting a magnificent 116 finish – the highest of the match – to seal his place in the second round.