Mensur Suljovic punished Michael van Gerwen for a host of missed doubles by claiming a 3-1 win in the first round of the the PDC Ladbrokes.com World Darts Championship at Alexandra Palace.
The Serbian-born Austrian opened with a 12-dart leg on the way to taking the first set 3-0, but Van Gerwen hit his stride and began to score heavily to take the next 3-0.
The Dutchman looked to be in the ascendancy as he moved into a 2-0 lead in the third set, but his inability to hit doubles continued to cost him as Suljovic came back to take it 3-2.
Suljovic made it five legs in a row to go into a 2-0 lead in the fourth. Van Gerwen made an 82 checkout to stay in the match, only for the Austrian to then clinch the set 3-1 and seal victory.
Terry Jenkins held off an impressive fightback from Joe Cullen, the youngest player in the tournament at 21 years old, to claim a 3-2 win.
Jenkins looked on course for a routine win as he raced into a 2-0 lead without losing a leg.
Cullen, though, competing in his first World Championship, found his form to win the third set 3-2 and repeat the feat in the fourth, sealing it with an 11-dart leg.
But experience told in the end as Jenkins, 47, won the decider 3-0 to clinch victory.
Jenkins told Sky Sports 1: ‘I felt a bit sorry for Joe when I was 2-0 up. I suppose I thought I'd got it easier than I did.
‘Joe was struggling, I suppose I should have beaten him 3-0 but I let him off the hook and he came back well.’