In the fourth quarter of 2018, 83 cases of suspicious betting were reported by the international betting integrity body, ESSA (Sports Betting Integrity).
This brings the annual total to 267 cases, with 178 incidents in tennis and 52 in football making up 86% of all alerts for the year.
Europe had the unfortunate honour of maintaining its position as the primary location for alerts, seeing 148 cases in 2018, 55% of the total. Asia stayed in second with 48 alerts, 18% of the total.
Khalid Ali, ESSA Secretary General, said: "ESSA’s alerts remain an important barometer for gauging betting-related corruption globally. Outside of tennis and football, we are beginning to see new threats emerging such as the increased number of alerts on esports.
"Given the multi-jurisdictional nature of match-fixing, regulators around the world are now beginning to make it a requirement for operators to be part of an international monitoring system, which we fully support."
ESSA also announced Jon Russell, Global Head of Trading at Betway, will take over as its new Chair.
He said: "I would like to thank the previous Chair, Heike Mayer, for her valuable contribution to ESSA and its members in the last couple of years.
"The association took on a new focus and direction during Heike’s tenure and I will be seeking to work with my board colleagues and the wider membership to build upon on the success of that approach and the positive impact that it has had."