Muguruza fades while Kerber roars in face of fearless challengers
Both the defending champion and the 2016 runner-up had stern tests on Day 4 at Wimbledon but where one fell, the other showed just how it should be done.
Both the defending champion and the 2016 runner-up had stern tests on Day 4 at Wimbledon but where one fell, the other showed just how it should be done.