Plenty of great matches in store on day 4.
Williams vs bouchard
Wawrinka vs raonic
Djokovic vs tsonga
Zverev vs chardy
Popyrin vs thiem
V. Williams vs cornet
Williams vs bouchard
Wawrinka vs raonic
Djokovic vs tsonga
Zverev vs chardy
Popyrin vs thiem
V. Williams vs cornet