Leonardo Mayer Pictures
BEIJING, CHINA - OCTOBER 05: Juan Martin del Potro and Leonardo Mayer of Argentina smile after missing a point during their Men's doubles quarterfinal match against Paolo Lorenzi of Italy and Mischa Zverev of Germany on day six of the 2017 China Open at the China National Tennis Centre on October 5, 2017 in Beijing, China. (Photo by Etienne Oliveau/Getty Images)