Ireland's Steve Lennon bowed out of the PDC World Darts Championship at Alexandra Palace when he lost a sudden-death thriller against England's Alan Norris.
Norris trailed 1-0 and 2-1 before taking the second-round match into a final fifth set.
Lennon missed two darts to win the match in the eighth leg, and Norris took advantage to win the 11th leg decider.
Former BDO champions Steve Beaton and Stephen Bunting also crashed out of the championship.
Veteran Beaton, the 1996 BDO world champion, was beaten 3-0 in the second round by fellow Englishman Chris Dobey.
The 28-year-old Dobey, who is almost half Beaton's age, dominated from the start and took the first set with a bullseye finish.
Dobey kept the pressure on and a cool 100 finish secured a third-round date with Holland's Vincent van der Voort.
Bunting, the 2014 BDO champion, was beaten 3-1 by Luke Humphries.
Holland's Jermaine Wattimena will meet two-time world champion Gary Anderson in round three.
Wattimena overcame some early double trouble to coast to a comfortable 3-0 victory over Michael Barnard.