BrendanN Dolan set up a last 32 clash against Gary Anderson next Sunday after last night's 3-0 win over Colin Osborne at Alexandra Palace.
Anderson, beaten in the 2011 final by Adrian Lewis, overcame 2005 runner-up Mark Dudbridge in straight sets.
Fermanagh ace Dolan was always in control against Osborne in the glamour £1million event.
Osborne was a late replacement for Philippines qualifier Edward Santos, who withdrew last weekend due to travel problems.
The Derby thrower, a former World Championship quarter-finalist, earlier in the evening beat Denmark's Dennis Lindskjold 4-1 after losing the opening leg.
Five-time world champion Raymond van Barneveld beat Welsh youngster Jamie Lewis 3-0.
"I feel fortunate to have won in straight sets as Jamie played some good stuff," said the Dutchman who last won the world title in 2007, defeating Phil Taylor 7-6 in one of the greatest ever games.
"Jamie did have a quite a few chances to win legs. The 141 to win the match was pretty crucial as Jamie was in control of the leg and had the throw in the fifth leg.
"I still feel I have another World title in me. I wouldn't be competing if I didn't have that belief."
John Henderson came through a dramatic tie-breaker to win a five set battle against world number seven Dave Chisnall.
There was disappointment for Northern Ireland's only other competitor, Colin McGarry losing 4-2 on Saturday to Denmark's Per Laursen – who then went on to beat seven-times major finalist Terry Jenkins.
But what an afternoon for the Larne thrower to be in action, Jenkins and Kyle Anderson hitting nine darters within an hour of one another – and both losing!