Holder Petra Kvitova blunted a late attack from France's Kristina Mladenovic to advance 6-3, 7-6 (7/5) into the third round of the Madrid Open on Monday.
The Czech second seed, chasing a fourth title on the Caja Magica clay, has now won her last five matches over qualifier Mladenovic in straight sets.
"It was a pretty difficult match. I fought hard in the end and that's what counts," the winner said, "The clay conditions here are a bit different compared to other venues, so I needed time to fight it out."
Khachanov earned his last win in mid-March at Indian Wells. An indifferent season continued for 2017 ATP Finals champion Grigor Dimitrov, with the
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