BENITO VAN DE PAS produced another shock result at the William Hill World Darts Championship as he dumped out number eight seed Dave Chisnall with a 4-2 win in the second round.

The 21-year-old Dutchman knocked out Paul Nicholson in the first round, but produced an even bigger upset as he twice came from behind to send Chisnall packing.

Van de Pas finished behind Chisnall in almost all of the post-match statistics, but when it mattered he produced the goods to move into the last 16 on his Alexandra Palace debut.

A 91.44 average for van de Pas was below Chisnall's 93.08, and with four 180s he was also one worse off than his opponent, but finishes such as his best of 127 helped him book a third round clash with Robert Thornton on Monday.

Chisnall swept the first three legs in style with a 12-darter capped by a 72 finish on the bull the highlight in the second leg.

Van de Pas responded by edging the next 3-2 after Chisnall missed double 18 for the set, but the St Helens man again claimed a 3-0 set with a 12-darter and back-to-back 180s to move back ahead at 2-1.

A 127 finish gave van de Pas the advantage in the fourth, and he added a 180 and 74 finish and a double 15 to level the match again.

When van de Pas hit double nine at the start of the fifth set he led for the very first time in the match, and he made it count with a 96 finish in the next and then claimed the set despite a 114 checkout from Chisnall.

Chisnall found another purple patch at the start of the sixth set, with a 180 and a break of throw helping him into a 2-0 lead, but after missing the bull for the set van de Pas swooped to hit tops to hit back.

The Dutchman then took out 77 for a break to level the set, and when throwing for the match he made no mistake by hitting double eight on his third attempt for a famous win.

"That's the best win of my life," said a delighted van de Pas. "To win a game like that on the big stage at the World Championship is where you make your name in darts, it's a dream for me.

"I've learned a lot playing in the floor tournaments this year, I've lost some close games and learned now how to fight hard and I was able to use that and bring my 'A' game to the big stage this time.

"This has been my dream to be here winning games and the dream now continues. It'll be tough to play against Robert, but I'll give it my best and we'll see what happens."