.
On quarterfinals day, Novak Djokovic made quick work of Jan-Lennard Struff, who had already had a terrific tournament.
No. 4 seed Stefanos Tsitsipas faced his second consecutive big American server in Reilly Opelka.
But the young American pulled the rip cord late in the first set, because of a knee issue.
Here are the highlights from Thursday.
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WTA Madrid – Tuesday results
ATP Madrid – Tuesday OOP
How to *properly* warm up for a seniors event, by Safin and Baghdatis (vid)