RIO DE JANEIRO, BRAZIL - AUGUST 07: Dustin Brown of Germany receives treatment after injuring his ankle before retiring from the match during his match against Thomaz Bellucci of Brazil in their first round match on Day 2 of the Rio 2016 Olympic Games at the Olympic Tennis Centre on August 7, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Brunskill/Getty Images)
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