The 46-year-old second seed was comfortable throughout as he won each set 3-1 to make progress towards a third straight title.
Fifth seed Adrian Lewis, runner-up last year, also went through by defeating Joe Cullen 4-0.
Michael Smith, the 11th seed, edged Mervyn King 4-3.
The 26-year-old Smith let a two-set advantage slip, but overcame King 4-2 in the decider.
Benito van de Pas also had a seven-leg match, eventually winning 4-3 against Terry Jenkins, while Darren Webster saw off 17th seed Simon Whitlock 4-0.
Ian White won the day's opening match to reach the last 16, beating Jonny Clayton 4-1.
Defending champion Gary Anderson is through to the last 16 of the PDC World Darts Championship after beating Andrew Gilding 4-0 at Alexandra Palace.