Adrian Lewis edged out Kevin Painter in the World Championship third round tonight to set up a last-eight clash with Michael van Gerwen.
The two-time Alexandra Palace champion surrendered a two-set lead to the 'Artist' before recovering to take the match 4-2.
Tournament second-favourite Van Gerwen earlier beat former world number one Colin Lloyd 4-1 to continue his excellent recent form.
Fellow Dutchman Raymond van Barneveld also secured his place in the quarter-final draw courtesy of a convincing 4-0 win over an off-colour Gary Anderson.
Losing finalist in 2010, Simon Whitlock, triumphed in the pick of Thursday's matches as he made a dramatic comeback to overcome Dave Chisnall.
After losing three legs on the spin in the deciding set, Whitlock produced a 152 checkout before sealing victory in the following leg.
James Wade and Wes Newton will face off in the last eight after recording 4-0 and 4-1 wins over Vincent van der Voort and Mark Walsh respectively.
