Jeff Smith is now 8/1 to win the BDO World Professional Darts Championships after knocking out three-time champion Martin Adams.
The 40-year-old, nicknamed ‘The Silencer’, claimed five legs in a row to seal a 3-0 victory at Frimley Green.
Smith now faces Brian Dawson in the next round and he is 1/2 to advance with his 15th-seeded opponent 8/5 after edging past John Walton 3-2.
Having reached the semi-finals last year - losing 6-0 to Scott Mitchell - Smith is in buoyant mood.
He told the BBC: “Martin's a dangerous player. If you give him an inch, he'll take a mile, so you have to finish him off.
“If I'm hitting doubles, I can compete with any player in the world and I know that.”
Adams, the winner in 2007, 2010 and 2011, has backed Smith to go all the way.
He said: “Jeff could go on and win it. If he carries on playing like that, he's going to be in the mix at the end."
No 1 seed Glen Durrant, the 9/5 favourite, is 11/50 to brush aside 33/10 shot Larry Butler.
Other matches include fifth-seed Wesley Harms (5/9) against Jim Williams (11/8) and Latvian Madars Razma (33/100) against fourth seed Jamie Hughes (9/4).
The final game of the day sees Martin Phillips (5/9) taking on Dennis Harbour (11/8).
Scott Waites, who next plays Geert de Vos of Belgium, is 5/1 second favourite with defending champion Mitchell – who has Mark McGeeney – at 6/1.