While the Serb lost just five games to a top-20 opponent in Melbourne, the Czech conceded just seven to a mighty server.
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Virtually every winner impressed, but some of the losers also stood out over the weekend at the Australian Open.
Sloane Stephens joined Serena Williams in the second week of the Australian Open, while Donald Young fell short.
The Swiss and the Scot moved one win apiece from their anticipated quarterfinal, while Dimitrov reached the second week of a major for the first time.
All of the top five women in action today advanced, but Garbine Muguruza ambushed Caroline Wozniacki at the Australian Open.
The two former No. 1s prevailed in straight sets but not before weathering significant tests from their opponents.
The second-ranked American man and second-ranked American woman met different fates at the Australian Open.
Serena Williams and Angelique Kerber cruised, Li Na escaped, Eugenie Bouchard broke through, and Ekaterina Makarova continued to shine.
Late men’s matches on Thursday offered plenty of drama, while Friday was more straightforward at the Australian Open.
The third-ranked man and fourth-ranked woman faced sterner resistance than the other top seeds at the Australian Open today.
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