Phil Taylor has remained on course for a sixth UK Open title with a 9-3 victory over David Pallett in Minehead.
The Stoke-on-Trent thrower twice hit six perfect darts during the fourth-round encounter, but he had to be content with a routine win over the world number 47.
Michael van Gerwen, who has been struggling with a pulled muscle in his right arm, joined Taylor in the last 16 with a 9-4 win over qualifier Paul Hogan.
However, Raymond van Barneveld bowed out of the competition after being thrashed 9-1 by Peter Wright.
Stephen Bunting is through to the next stage after a 9-6 triumph over Dave Chisnall.
Last-16 draw:
Kyle Anderson vs. Mervyn King Kim Huybrechts vs. Michael van Gerwen Eddie Dootson vs. Devon Petersen Vincent van der Voort vs. Phil Taylor Mensur Suljovic vs. Jan Dekker Stephen Bunting vs. William O'Connor Peter Wright vs. John Henderson James Wade vs. Andrew Gilding