Following severe criticism of the handling of the 2014 Australian Open, organisers increased the temperature threshold from the 2003 level of and increased the wet-bulb globe temperature (WBGT) threshold from the 2003 level of to allow for more continuous play and fewer stoppages in the future [REF].
WBGT charts show that the new threshold may not be triggered even if the temperature reaches when there is no humidity [REF].