Tsitsipas held to love closing out the first set and he looks set to repeat that in the second, but a fine forehand return puts paid to that plan … so he bangs an ace down the middle by way of compensation. He leads 6-4 6-4, and though Martinez is playing really well, yerman has another level that he contacts when necessary.
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Nishikori says it was a good match and he tried to be aggressive in the crucial game. It worked well for him, and he’s so good under pressure.
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While all that was going on, Tsitsipas’ pressure finally told on Martinez, who’s been broken for 5-4; if he can’t find a response, he’ll be 2-0 down.
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Keys  beats Fernandez 6-1 7-5!
She faces Azarenka next; make sure you’re by a telly for that one.
He only needs one! Nishikori finds a big forehand right when he needs one and Khachanov can’t respond! When he called upon them, his hands didn’t fail him, and with the qualifier Laaksonen next, he’s got a great chance of making the last eight – though Laaksonen played beautifully to beat Bautista Agut.