The highlight of the 2006/2007 season was a run to the last 64 of the 2007 World Championship, where Leadbetter defeated retired professional Les Dodd 10–8, Chris Norbury 10–9 and Stuart Pettman 10–3, before being defeated 7–10 by former World Champion John Parrott, who that year would reach the last 16 in his final appearance at the Crucible Theatre.