Russia's Andrey Rublev, left, returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083558
Russia's Karen Khachanov, left, and Russia's Andrey Rublev, right, celebrate their victory after a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083557
Russia's Karen Khachanov, left, and Russia's Andrey Rublev, right, celebrate their victory after a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083556
Russia's Karen Khachanov, left, and Russia's Andrey Rublev, right, react after a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083555
Russia's Karen Khachanov, left, and Russia's Andrey Rublev, right, celebrate their victory after a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083554
Russia's Karen Khachanov celebrates a victory after a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083553
Russia's Karen Khachanov celebrates a victory after a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083552
Russia's Andrey Rublev returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Filip Krajinovic, in Madrid, Spain.22.11.2019#6083506
Serbia's Novak Djokovic, reacts during a Davis Cup Finals the quarter final tennis doubles match against Russia's Karen Khachanov and Russia's Andrey Rublev, in Madrid, Spain. 22.11.2019#6083501
Russia's Andrey Rublev, left, returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083492
Russia's Karen Khachanov, right, and Russia's Andrey Rublev, left, shake hands after a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain.22.11.2019#6083482
Serbia's Viktor Troicki returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Russia's Karen Khachanov and Russia's Andrey Rublev, in Madrid, Spain. 22.11.2019#6083480
Serbia's Novak Djokovic, right, returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Russia's Karen Khachanov and Russia's Andrey Rublev, in Madrid, Spain. 22.11.2019#6083478
Russia's Andrey Rublev, left, reacts during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083477
Russia's Andrey Rublev, left, returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083474
Russia's Karen Khachanov, right, and Russia's Andrey Rublev, left, talk to President of the Russian Tennis Federation Shamil Tarpishchev during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083472
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain.22.11.2019#6083470
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain.22.11.2019#6083468
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain.22.11.2019#6083460
Russia's Karen Khachanov, right, and Russia's Andrey Rublev, left, shake hands after a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083458
Russia's Karen Khachanov and Russia's Andrey Rublev walk during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083456
Russia's Karen Khachanov reacts during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083454
Russia's Karen Khachanov, left, and Russia's Andrey Rublev react during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083451
Russia's Karen Khachanov reacts during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083448
Serbia's Novak Djokovic, right, returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Russia's Karen Khachanov and Russia's Andrey Rublev, in Madrid, Spain. 22.11.2019#6083447
Russia's Karen Khachanov reacts during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083442
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis doubles match against Serbia's Novak Djokovic and Serbia's Viktor Troicki, in Madrid, Spain. 22.11.2019#6083438
From left to right: Serbia's Viktor Troicki, Serbia's Novak Djokovic, Russia's Karen Khachanov and Russia's Andrey Rublev pose for a photo ahead of a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain.22.11.2019#6083392
Moscow ex-Mayor Yury Luzhkov watches a Davis Cup Finals the quarter final tennis match, in Madrid, Spain.22.11.2019#6083357
From left to right: President of the Russian Tennis Federation Shamil Tarpishchev talks to Moscow ex-Mayor Yury Luzhkov after a Davis Cup Finals the quarter final tennis match, in Madrid, Spain.22.11.2019#6083354
From left to right: President of the Russian Tennis Federation Shamil Tarpishchev, Yelena Baturina and Yury Luzhkov talk after a Davis Cup Finals the quarter final tennis match, in Madrid, Spain. 22.11.2019#6083348
President of the Russian Tennis Federation Shamil Tarpishchev and Yelena Baturina hug after a Davis Cup Finals the quarter final tennis match, in Madrid, Spain. 22.11.2019#6083346
President of the Russian Tennis Federation Shamil Tarpishchev reacts after a Davis Cup Finals the quarter final tennis match, in Madrid, Spain.22.11.2019#6083344
Serbia's Novak Djokovic reacts during a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain. 22.11.2019#6083341
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain. 22.11.2019#6083334
Russia's Karen Khachanov reacts during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain. 22.11.2019#6083323
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain. 22.11.2019#6083320
Russia's Karen Khachanov, left, and Serbia's Novak Djokovic, right, shake hands after a Davis Cup Finals the quarter final tennis match, in Madrid, Spain. 22.11.2019#6083303
Serbia's Novak Djokovic returns a shot during a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain. 22.11.2019#6083300
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain. 22.11.2019#6083299
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain.22.11.2019#6083298
Serbia's Novak Djokovic returns a shot during a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain. 22.11.2019#6083297
Serbia's Novak Djokovic returns a shot during a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain. 22.11.2019#6083296
Serbia's Novak Djokovic reacts during a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain. 22.11.2019#6083294
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain. 22.11.2019#6083290
Russia's Karen Khachanov reacts during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain.22.11.2019#6083286
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain.22.11.2019#6083285
Serbia's Novak Djokovic returns a shot during a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain. 22.11.2019#6083283
Serbia's Novak Djokovic returns a shot during a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain. 22.11.2019#6083279
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain.22.11.2019#6083214
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain. 22.11.2019#6083207
Serbia's Novak Djokovic serves a shot during a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain. 22.11.2019#6083202
Serbia's Novak Djokovic returns a shot during a Davis Cup Finals the quarter final tennis match against Russia's Karen Khachanov, in Madrid, Spain. 22.11.2019#6083185
Russia's Karen Khachanov, right, and President of the Russian Tennis Federation Shamil Tarpishchev talk after a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain. 22.11.2019#6083181
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain.22.11.2019#6083173
Russia's Karen Khachanov gestures during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain. 22.11.2019#6083171
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain.22.11.2019#6083167
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain.22.11.2019#6083166
Russia's Karen Khachanov returns a shot during a Davis Cup Finals the quarter final tennis match against Serbia's Novak Djokovic, in Madrid, Spain. 22.11.2019#6083162
President of the Russian Tennis Federation Shamil Tarpishchev watches his player during a Davis Cup Finals the quarter final tennis match, in Madrid, Spain. 22.11.2019#6083158