Day Four - Nitto ATP World Tour Finals

Poland's Lukasz Kubot (R) and Brazil's Marcelo Melo play against USA's Bob Bryan and USA's Mike Bryan during their men's doubles round-robin match on day four of the ATP World Tour Finals tennis tournament at the O2 Arena in London on November 15, 2017. / AFP PHOTO / Glyn KIRK
(Nov. 14, 2017 - Source: AFP)