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Brazil's tennis player Thomaz Bellucci reacts after winning against Japan's Kei Nishikori during their ATP World Tour 500 Rio Open at Jockey Club in Rio de Janeiro, Brazil, on February 21, 2017. / AFP PHOTO / Yasuyoshi Chiba (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)

Brazil's tennis player Thomaz Bellucci reacts after winning against Japan's Kei Nishikori during their ATP World Tour 500 Rio Open at Jockey Club in Rio de Janeiro, Brazil, on February 21, 2017. / AFP PHOTO / Yasuyoshi Chiba        (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)

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RIO DE JANEIRO, BRAZIL - FEBRUARY 21: Thomaz Bellucci of Brazil returns a shot to Kei Nishikori of Japan during the ATP Rio Open 2017 at Jockey Club Brasileiro on February 21, 2017 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)

RIO DE JANEIRO, BRAZIL - FEBRUARY 21: Thomaz Bellucci of Brazil returns a shot to Kei Nishikori of Japan during the ATP Rio Open 2017 at Jockey Club Brasileiro on February 21, 2017 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)

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RIO DE JANEIRO, BRAZIL - FEBRUARY 21: Thomaz Bellucci of Brazil returns a shot to Kei Nishikori of Japan during the ATP Rio Open 2017 at Jockey Club Brasileiro on February 21, 2017 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)

RIO DE JANEIRO, BRAZIL - FEBRUARY 21: Thomaz Bellucci of Brazil returns a shot to Kei Nishikori of Japan during the ATP Rio Open 2017 at Jockey Club Brasileiro on February 21, 2017 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)

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Brazil's tennis player Thomaz Bellucci reacts after winning against Japan's Kei Nishikori during their ATP World Tour 500 Rio Open at Jockey Club in Rio de Janeiro, Brazil, on February 21, 2017. / AFP / Yasuyoshi Chiba (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)

Brazil's tennis player Thomaz Bellucci reacts after winning against Japan's Kei Nishikori during their ATP World Tour 500 Rio Open at Jockey Club in Rio de Janeiro, Brazil, on February 21, 2017. / AFP / Yasuyoshi Chiba        (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)

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Brazil's tennis player Thomaz Bellucci (L) greets Japan's Kei Nishikori after defeating him during their ATP World Tour 500 Rio Open at Jockey Club in Rio de Janeiro, Brazil, on February 21, 2017. / AFP / Yasuyoshi Chiba (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)

Brazil's tennis player Thomaz Bellucci (L) greets Japan's Kei Nishikori after defeating him during their ATP World Tour 500 Rio Open at Jockey Club in Rio de Janeiro, Brazil, on February 21, 2017. / AFP / Yasuyoshi Chiba        (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)