Wozniacki was initially part of the event; which is an exhibition which takes place every year before the Australian Open. This year's line-up includes Nick Kyrgios, Maria Sharapova; as well as Stefanos Tsitsipas and Grigor Dimitrov.
Tournament organiser Peter Johnston announced that she will not be involved; he said it is a precautionary measure more than anything.
“She’s pulled up a bit sore after playing in Auckland so as a precaution ahead of the Open she’s decided not to play,” Johnson told reporters.