Third seed James Wade was at his best as he powered into the quarter-finals of the World Championship with a 4-0 win over Steve Farmer.
Wade, third in the Order of Merit but looking for his first world title, gave a hint of what was to come as he took the first set 3-0.
Farmer claimed a single leg in the second, and had a dart for the set in both the third and fourth, but it was a dominant display from Wade.
Wade told the PDC website: "It wasn't as easy as the scoreline suggests. I feel fine and I'll just keep playing the way I have been.
"I've only lost one set in three matches so far, so I must be doing something right."
Wade next faces Canadian John Part, the 2008 champion, who beat Kevin Painter 4-2.
"I'm looking forward to playing John on Friday," said Part. "We had an epic quarter-final here back in 2008, which he won. I would like to get one back over him this time around."
In the final of this afternoon's three last-16 clashes, Belgian Kim Huybrechts upset ninth seed Paul Nicholson 4-1.