Stephen Lee has failed in his bid to overturn a 12-year ban for match-fixing.
Lee had challenged the findings of a tribunal in September 2013 which found him guilty of fixing seven games in 2008 and 2009.
But his case was thrown out by Nicholas Stewart QC, who also increased Lee's original costs order from £40,000 to £75,000.
The decision means Lee will not be eligible to return to competitive snooker before October 12, 2024.
A statement issued by the World Professional Billards and Snooker Association read:
"Nicholas Stewart QC, sitting as The Appeals Committee, has considered the submissions made by all parties in the final part of Stephen Lee's appeal against his finding that he was in breach of the WPBSA Rules for match and spot fixing in connection with seven matches in 2008-9.
"The appeal was against the finding, and the costs order imposed by Adam Lewis QC in September 2013.
"Today Mr Stewart has delivered his decision and he has dismissed the appeal. In addition he has increased the costs order in relation to the hearing before Adam Lewis QC from £40,000 to £75,000.
"The term of the suspension remains at a period of twelve years. This means that Stephen Lee will continue to be unable to compete in professional snooker before 12th October 2024.
"The costs in relation to the appeal hearing on Monday are yet to be determined."