Roger Federer v David Ferrer, Serena Williams v Maria Sharapova: What are the most surprising head-to-head records?
Yoshihito Nishioka is turning into a problem for Dan Evans. Having won all five of their previous meetings, Nishioka improved his head-to-head record to 6-0 against Evans with a straight-sets victory in Seoul. The lop-sided record is made even more surprising as Nishioka has been ranked at least 10 places lower than Evans every time they have met.


