Now, with these four tournaments cancelled, the ATP said it has granted single-year event licenses to six ATP 250 tournaments.
Zverev is given a deadline until Friday for appealing the ATP senior vice president of rules and competition, Miro Bratoev’s ruling.
The 35-year-old defeated Maxime Cressy 7-6 (6), 6-3 in the final of Melbourne Summer Set 1 on Sunday.
Having sat a set and a break down heading into the resumption, Novak Djokovic demonstrated all his fighting qualities to recover in Rome.
Roger Federer reflected on coming down a "long and tough road" to make his comeback after beating Dan Evans in Doha.
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