Peter Wright overcame Wes Newton 5-4 in a dramatic quarter-final encounter at Alexandra Palace to reach the last four of the PDC World Championship.
The colourful Scotsman was chasing the game after Newton built a quick 2-0 lead, but rallied to take the seventh set and move 4-3 ahead.
It was a third quarter-final exit in four years for world number eight Newton as Wright held his nerve in the final set tie-breaker to convert a 121 checkout, finishing on the bull.
“I’m so pleased to come through that, it was such a tough battle,” Wright told pdc.tv.
“I could have it easier for myself in the final set, but I forgot about the mistakes I made and just got on with things, and that attitude worked.
“To reach the semi-finals of the biggest event in the game, shows all the practice I’ve put in and the changes I’ve made to my darts have paid off in a big way.”
Earlier on Saturday, Michael van Gerwen avoided a shock exit by edging a thrilling encounter with Gary Anderson to progress to the quarter-finals.
The Dutchman needed seven sets to book his place alongside Mark Webster in the last eight after 2011 finalist Anderson pulled two sets clear by hitting double one with a pressure third dart in the fourth set.
Van Gerwen rallied to force a deciding set and finally squeezed over the line to win 4-3 by hitting a brilliant 174 before closing on double eight at the first attempt.
After keeping his hopes of winning a first world title alive, the 24-year-old said: “I was very disappointed not to win the fourth set to level at two all, but I never lost belief that I couldn’t make a comeback and win.
“It’s a great feeling to be involved in brilliant fast-flowing games like this, and the crowd added to it by making a great atmosphere.”
Adrian Lewis booked his place in the quarter-finals and a tantalising match against James Wade by clinching a 4-1 victory over Mervyn King.