(AP Photo/Vincent Thian,File)

(AP) -- Australian Open tournament director Craig Tiley has ruled out any change in the best-of-five set format for men's singles matches at the season-opening tennis major as three more COVID-19 cases were reported among the international arrivals for the tournament.

There are 72 players now in hard quarantine and unable to practice because of nine active coronavirus cases - an increase in three - among the incoming travelers to Melbourne. There was no immediate indication from health officials Tuesday that there would be any increase in the number of affected players.

In good news for players in lockdown, there were suggestions that some may be allowed to leave their rooms for practice before the 14-day hard quarantine period.

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