Rees has run the Tennis Integrity Unit since its inception four years ago, but will be replaced by fellow former Metropolitan Police officer Nigel Willerton, who has been working as an investigator with the unit for the last two and a half years.
The 52-year-old Willerton has been working with the unit for almost three years now and will aim to pick up where Rees leaves off.
Rees’ investigative work has led to two players receiving life bans - Austrian Daniel Köllerer, a former world number 55, and Serbian David Savic – for attempted match-fixing, while several others have been suspended or fined.
He co-authored a report into ‘integrity in professional tennis’ in 2008 which stated that 45 of 73 tennis matches involving suspicious betting patterns were worthy of further investigation.
- Sports & Recreation