James Wade moved into the semi-finals of the Ladbrokes.com World Darts Championship following an epic 5-4 victory over John Part at the Alexandra Palace.
The 2008 champion was in control early on, taking nine of the first 11 legs of the match.
However, he missed a chance to go 4-1 up and Part hit back to take the next three sets to lead 4-3 before Wade levelled to force a sudden death shoot-out which he won with an 85 finish.
Afterwards, Wade said: "The 85 finish was fantastic and I'm delighted to have hit that triple 15 under pressure to leave the opportunity at double top.
"I had a great start to the match and felt like I had established control but before I knew it John was 4-3 ahead and I was struggling.
"But I did recover from that setback and I'm delighted to be in with a chance of becoming world champion."
Andy Hamilton moved into the semi-finals for only the second time with a 5-2 win over Kim Huybrechts.
Appearing in the first of the last-eight clashes, the Stoke thrower was impressive with 11 180s and a three-dart average over 102.
Hamilton took a two-set lead before Huybrechts hit back to win the third set without reply.
The number 17 seed then pulled 4-1 ahead and although his opponent took the sixth, Hamilton claimed victory with three maximums in the seventh.