Lewis made his PDC World Championship debut in 2006, reaching the quarter-finals by defeating Dave Honey, Dennis Priestley and Roland Scholten. He was involved in, what has become, an infamous match against Peter Manley. When 2–1 down Lewis successfully hit a blind 180, where he turned to face Manley as the last dart was in the air. Manley won the set and then appeared to say something while Lewis was throwing, which caused him to leave the stage. Lewis did return, but went on to lose the match 5–3.