Australia’s John Peers (L) serves while alongside playing partner Sam Groth (front) during their Tennis Davis Cup World Group Play-Off doubles match against Slovakia’s Andrej Martin and Igor Zelenay at the Ken Rosewall Arena in Sydney, 17 September 2016. EPA/DAVID MOIR

Juan Martin del Potro of Argentina in action against Andy Murray of Britain during the Tennis Davis Cup semi final between Britain and Argentina in Glasgow, Scotland, Britain, 16 September 2016. EPA/ROBERT PERRY

Ruben Bemelmans and Joris De Loore of Belgium react during the double match of the Tennis Davis Cup World Group Play-off round between Belgium and Brazil at the Versluys Dome in Ostende, Belgium, 17 September 2016. EPA/JULIEN WARNAND

Nicolas Mahut (L) and Pierre-Hugues Herbert (R) of France in action against Croatia’s Marin Cilic and Ivan Dodig during the doubles match for the tennis Davis Cup semi final tie between Croatia and France at the Kresimir Cosic Hall, in Zadar, Croatia, 17 September 2016. EPA/ANTONIO BAT

Leonardo Mayer of Argentina in action against Andy Murray and Jamie Murray of Britain during the Tennis Davis Cup semi final between Britain and Argentina in Glasgow, Scotland, Britain, 17 September 2016. EPA/ROBERT PERRY