The Tennis Integrity Unit (TIU) has confirmed it received 48 alerts to suspicious betting and match fixing in the first quarter of 2016, SBC News reports.
The figure is up by 31 from the same period in 2015.
TIU confirmed that one alert came from the Australian Open and one from the WTA Tour; the other 46 cases were from lower ranking tournaments at Futures or Challenger level.
The TIU, an organization dedicated to tackling the threat of fixed matches in Tennis, however insisted that the alerts are not always an indication of wrongdoing. Irregular betting can be triggered by incorrect odds setting, player fatigue or injury and playing conditions.
The TIU commented: “Every alert received by the TIU is assessed and followed up as an indicator that something inappropriate may have happened. The total of 48 alerts received during the quarter should be seen in the context of the 24,110 matches played around the world in that period, representing a tiny percentage of 0.2.”