Raymond van Barneveld produced a stunning comeback to beat world number one Colin Lloyd in a sudden-death leg at the PDC World Championship.
Van Barneveld will meet Rico Vonck in the third round
The Dutchman looked to be heading for an early exit after Lloyd cruised into the lead but fought back to 5-5.
Van Barneveld kept his composure as the pressure mounted to record a famous 4-3 second-round victory at Circus Tavern.
He said: "I knew I had to fight for my life, but I came back and sometimes there is an angel on your shoulder."
Three-time runner-up Peter Manley was earlier involved in controversy as he lost 4-3 to Wynand Havenga.
Manley, who fell out with Adrian Lewis last year, seemed to be upset by the South African's celebrations and the time he took to retrieve his darts.
Havenga took a three-set lead before Manley fought back to level, but the outsider regained his poise to win.
"When I was 3-0 up I thought I was going to kick his butt," said Havenga.
Fifth seed Lewis hit 13 maximum 180 scores on his way to a thrilling 4-3 win over last year's semi-finalist Wayne Jones.
Jones fought back from 2-0 down and staged another fightback to make it 3-3 before 21-year-old Lewis finally clinched victory.
Lewis, who took the first set in less than five minutes with an average of just under 122, will now play Andy Jenkins or Andy "Pieman" Smith.
Lewis, who practises with 13-time champion Phil Taylor, admitted it he had lost focus.
"I had to laugh, but I can assure you Phil will say something about that," he said.
"When it went to 3-3 I knew I had to dig in deep because Wayne's confidence was high and I made sure I pulled myself through."
Sixth seed Terry Jenkins held off Steve Beaton's fightback to claim a 4-3 victory with a 101 checkout.
"I went 2-0 up but then the doubles just wouldn't go in for me," said Jenkins. "I lost my way a bit and let it get to me, but I held my own in the end."
Chris Mason, the 15th seed from England, saw off Canada's former world champion John Part, seeded 18, 4-2 to gain revenge for his defeat last year.
Rico Vonck, a 19-year-old from Holland, set up a third-round clash with compatriot Van Barneveld courtesy of a 4-2 victory against Canadian champion Brian Cyr.
Darren Webster eased past the challenge of fellow Englishman 4-1 in the day's final match.
The tournament resumes on Boxing Day evening.