The Czech is into the quarters in Stuttgart, where she is the defending champion.
Young Canadians have split four career meetings.
"He played well and honestly I didn't. So when this kind of stuff happens, the matches are tough," said Rafa Nadal after his comeback win in Barcelona.
For the first time in his career, Fabio Fognini was disqualified from an ATP level match.
Two of the Big 3 are major influences on Italian phenom for different reasons.
Dominic Thiem opens up on emptiness and loneliness after US Open triumph.
The 25-year-old Australian is now proving that belief to be true.
