Petra Kvitova still uncertain about US Open participation.
Petra Kvitova not keen on majors without fans.
Czech star happy to take a break.
Aryna Sabalenka dedicates Qatar title to her late father.
Aussie star has no complaints.
Australian shows her quality.
Top seed gains revenge on Czech.
Duo produce incredible contest.
Duo make powerful statements, as does Petra Kvitova.
World number six still struggling.