Dave Chisnall kept his cool to cause a massive upset and knock multiple winner Phil Taylor out of the ladbrokes.com World Championship with a commanding performance at the Alexandra Palace.
Chisnall, from St Helens, won the second-round clash in one of the biggest shocks in the sport.
Taylor, from Stoke, who has won the PDC title 13 times and also two BDO world championships, looked out of sorts from the opening leg and was brushed aside four sets to one.
Chisnall admitted on Sky Sports 1: "I don't know how I did that. I threw well in the game but started getting a bit nervous at the end. When he gave me a chance I took it."
Both players missed important throws but Chisnall kept his head to win the fifth set with double six after Taylor had missed two shots at double 20.
Chisnall added: "He's been missing doubles as well as I did. I've always thought I can beat anybody if I play my game. I thought I could beat him when I came into the championship."
Chisnall gave a glimpse of what was to come when he took the first set but Taylor hit straight back to win the next.
The next two sets went to Chisnall to set up the chance to cause the upset of the tournament but first he had to hold his nerve against Taylor.
After taking the opening leg of the fifth set Chisnall was pegged back but won the next two legs, including a stuttering finish in the final leg, to win the set 3-1 and put out Taylor.
Kim Huybrechts also caused a shock to put out giant-killer James Richardson, the conqueror of five-times winner Raymond van Barneveld in the first round.
The Belgian won the first set but Richardson hit a 140 checkout to take second.
Huybrechts edged a narrow third set before whitewashing his opponent in the fourth, twice winning legs against the throw.
Both hit maximums in the fifth leg of the fifth set but it was Huybrechts who took it and the match.
Andy Hamilton fought back with a deciding-set victory over Vincent van der Voort.
Hamilton won the seventh set of the last-32 battle by three legs to one, taking one dart to hit double 18 where earlier in the contest he had struggled to hit the doubles.
But he kept his cool to win 4-3 and join John Part and Terry Jenkins in the last 16.
Part was a 4-1 winner over Richie Burnett and Jenkins triumphed by the same score against Co Stompe.
Taylor admitted he had been beaten by the better player on the night.
He said: "Dave was a better player. When he took that fourth set it was a massive blow for me.
"Then I was struggling. It's all on the night and I wasn't good enough."
Taylor was gracious in defeat and added on Sky Sports 2: "I'm not going to knock my performance, I'm not going to knock Dave's performance, I thought he was the better player."
Taylor revealed he had been handicapped by faltering eyesight and was affected by the heat while he was playing Chisnall.
He added: "I'm going to do another two or three years and then I'm going to retire.
"I will try harder in the next two or three years and then I'm going to retire."
Paul Nicholson cruised to a 4-0 victory in the final match of the night against Alan Tabern.
The Australian raced through the opening two sets without dropping a leg, before Tabern finally got on the scoreboard at the start of the third set.
It was a brief moment of respite, however, as Nicholson closed out the contest in quick time.