Anucha Tongplew, Apisit Promchai, and Chitchai Srililai admitted to betting on tennis matches at ITF Futures tournaments held in 2017, at which they were chair umpires.
This three chair umpires also manipulated scores inputted into the official scoring system, for betting purposes.
All three have also been banned lifetime from attending professional tennis events.
The investigation was done out by the Tennis Integrity Unit which, tasked by the major governing bodies, looks into corruption in tennis.
