Petra Kvitova has joined fellow Wimbledon winner Roger Federer in opposition to the concept of staging tennis event behind closed doors and without fans, ballkids and handshakes.
Comparing who is the best tennis player is never easy. You would think it is simpler than comparing say two footballers, as tennis is an individual game. You want to know who is better, get them to play against each other. Whoever wins is better. Done.