Duff, who became the first Northern Irishman to achieve the feat, beat Tricole 6-5.

The 49-year-old, however, had the worst possible start in the final after losing the opening two sets and the fourth before bouncing back to level the score at 3-3.

Tricole failed to take advantage of the situation and paid for missing set darts at 2-0 up in the seventh as Duff went ahead for the first time.

Duff then managed to with the ninth to make it 5-4 before Tricole took the 10^th to level the score again.

In the decider, Duff triumphed in sensational style, with an average of 87.73 to bag the title and became the first debutant to win the title at Lakeside since Christian Kist of The Netherlands in 2012. 

Meanwhile, England’s Charlie Large, who upset former champion and compatriot Leighton Bennett in the semi-final, went down to Bradly Roes of The Netherlands 3-1 in the Boys’ World Championship final.

Among women, Beau Greaves of England cruised to a 4-0 victory over compatriot Kirsty Hutchinson to become the youngest world champion in darts history.

Hailing from Doncaster, the 18-year-old who dropped only three legs in quarter and semi-final, continued her sensational form in the final as well.

Greaves’ average of 92.02 in the final is the third best in the history of the Women’s World Championship.

Earlier, Eleanor Cairns of England got the better of Germany’s Wibke Riemann 2-0 to win the inaugural L-style WDF Girls World Championship.