Huge matches on day 8:
Serena vs Halep
Djokovic vs Medvedev
Raonic vs Zverev
Muguruza vs Pliskova
Coric vs pouille
Svitolina vs Keys
Carreno busta vs nishikori
Sevastova vs Osaka
Serena vs Halep
Djokovic vs Medvedev
Raonic vs Zverev
Muguruza vs Pliskova
Coric vs pouille
Svitolina vs Keys
Carreno busta vs nishikori
Sevastova vs Osaka