Djokovic and Tiafoe are leading investigation on Rod Laver Arena
The two joined forces to find out the American's vibration dampener.
Sweeny
Hijikata
02:30
Moller
Martin
11:00
Havlickova
Ruse
10:00
Lepchenko
Udvardy
16:30
Alkaya
Clarke
08:00
Fery
Geerts
08:00
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