Raymond van Barneveld wins thrilling battle of past champions

Earlier, defending champion Gary Anderson booked his place in the quarter-finals.

Defending champion Gary Anderson booked his place in the quarter-finals of the William Hill World Darts Championship with a 4-2 win over Benito van de Pas at Alexandra Palace.

Anderson, the second seed, held off a spirited display from 23-year-old Dutchman van de Pas to open up a 3-0 lead without missing a double and producing nine maximums.