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Argentina's Diego Schwartzman plays a backhand return to Czech Republic's Adam Pavlasek during their men's singles second round match on day five of The Roland Garros 2018 French Open tennis tournament in Paris on May 31, 2018. (Photo by CHRISTOPHE ARCHAMBAULT / AFP) (Photo credit should read CHRISTOPHE ARCHAMBAULT/AFP/Getty Images)

Argentina's Diego Schwartzman plays a backhand return to Czech Republic's Adam Pavlasek during their men's singles second round match on day five of The Roland Garros 2018 French Open tennis tournament in Paris on May 31, 2018. (Photo by CHRISTOPHE ARCHAMBAULT / AFP)        (Photo credit should read CHRISTOPHE ARCHAMBAULT/AFP/Getty Images)