Daria Kasatkina will try to challenge Serena Williams who is currently ranked No.1 in the world. I suggest that this match will consist of more than 17.5 games. It’s likely that Serena will need some time to look over her opponent. As we all know, these two rivals had never met before. Plus, Daria Kasatkina has nothing to lose. She can be relaxed and show her best game in this match.