That match was the only one of the eight last-16 encounters to go the distance, with ties now best-of-three affairs where a doubles match is used as the decider if necessary.

Gerwyn Price had a 104.60 three-dart average as he beat John Henderson 4-2 to give Wales the advantage, but Jonny Clayton lost by the same scoreline against Robert Thornton to produce a decider.

The Welsh dominated that, winning 4-0 with a 101.90 average.

Henderson and Thornton were representing Scotland at the tournament at Salzburgarena in Austria after Peter Wright and Gary Anderson - last year's winners - opted against travelling. 

Wales will play Australia in the quarter-finals, following their 2-0 win over Poland.

The Australians are one of two unseeded pairs left, along with Canada, who brushed aside New Zealand.

Belgium, conquerors of Latvia, are next up for Canada. 

Top seeds England and the Dutch third seeds both avoided any slip-ups, seeing off Lithuania and Spain respectively, although Jesus Noguera put up a spirited effort in the latter match, falling 4-3 to Danny Noppert after missing two darts at double 10 for the match.

Sixth seeds Germany beat Greece to set up a tie with the Dutch, whereas England will play host pairing Rowby-John Rodriguez and Mensur Suljović.

The PDC's flagship international competition will wrap up tomorrow, with seven matches scheduled in Austria.