Top seed James Wilson suffered a shock 3-1 defeat to Peter Sajwani at the BDO World Championship at Lakeside on Monday night.
The 42-year-old world number five from Huddersfield, nicknamed the Jammie Dodger, raced into a 1-0 lead but then came unstuck as his Swedish opponent recorded a first-round upset.
Also in the afternoon session, another Swede, Daniel Larsson moved past Willem Mandigers of Holland 3-1 to set up a clash with Alan Norris on Tuesday.
Monday evening saw England duo Jamie Hughes and Brian Dawson both advance as they both saw off Dutch opponents.
Hughes of Tipton defeated Michel van der Horst with a 3-1 triumph, while Barnsley's Dawson moved past Jeffrey de Graaf with a comfortable 3-0 win.
Belgium's Geert de Vos beat Remco Van Eijden - also of Holland - with a 3-1 result in the night's other first-round match.
While - in the preliminary round - American Jim Widmayer claimed a 3-2 victory over Braintree's Rhys Hayden.
