Tennis Australia faced fierce criticism after a player retired with breathing difficulties in the opening round of qualifying matches for the Australian Open.
Australian Open tournament director, Craig Tiley, said last week that he was hopeful the tournament, due to start on 20 January, would go ahead but said air quality would be closely monitored.
Russian Sharapova's match with Germany's Laura Siegemund was called off with Siegemend leading 7-6, 5-5 after both players complained to the chair umpire. Siegemund won the first set in a tiebreaker but players and officials chose to stop play at 5-5 in the second.
It's an obvious concern with the world's eyes set to be glued on Melbourne during the two-week championship from Monday when thousands of worldwide and Australian tennis fans will also throng to the precinct.
Much of Victoria is breathing air rated "poor", "very poor" and even "hazardous" today, due to 19 bushfires still burning across the state.
He added: "We have experts who analyse all available live data as specific to our sites as possible and consult regularly with tournament officials and, in the case of heat and smoke, medical experts". TA said it will work with its medical team, the Bureau of Meteorology, and Environment Protection Authority Victoria scientists when making decisions about whether it's healthy to play.
Later on Tuesday qualifying was delayed because of the poor air quality.
The EPA's air quality controller Jason Choi told state radio the smoke would likely linger until Wednesday when afternoon showers were forecast.
TA chief operating officer Tom Larner said any smoke stoppages would be treated in the same way as an extreme heat or rain delay.
Ordinary paper dust-masks, handkerchiefs and bandanas won't filter out fine particles or smoke. "Close your windows and doors to keep smoke and dust out of your home", they said in a statement.