| Rank | Country | Answer | % Correct |
|---|---|---|---|
| 4 | Germany | Alexander Zverev | 100%
|
| 69 | Germany | Mikhail Zverev | 100%
|
| 1 | Serbia | Novak Djokovic | 100%
|
| 2 | Spain | Rafael Nadal | 100%
|
| 3 | Switzerland | Roger Federer | 100%
|
| 16 | Russia | Daniil Medvedev | 95%
|
| 8 | Austria | Dominic Thiem | 95%
|
| 9 | Japan | Kei Nishikori | 95%
|
| 5 | Argentina | Juan Martín del Potro | 92%
|
| 7 | Croatia | Marin Čilić | 92%
|
| 19 | Bulgaria | Grigor Dimitrov | 90%
|
| 6 | South Africa | Kevin Anderson | 90%
|
| 13 | Italy | Fabio Fognini | 89%
|
| 15 | Greece | Stefanos Tsitsipas | 89%
|
| 10 | USA | John Isner | 87%
|
| 29 | France | Gaël Monfils | 85%
|
| 49 | USA | Taylor Fritz | 84%
|
| 22 | Belgium | David Goffin | 80%
|
| 17 | Argentina | Diego Schwartzman | 80%
|
| 12 | Croatia | Borna Ćorić | 77%
|
| 18 | Canada | Milos Raonic | 77%
|
| 68 | Russia | Andrey Rublev | 75%
|
| 11 | Russia | Karen Khachanov | 75%
|
| 54 | Italy | Matteo Berrettini | 74%
|
| 21 | Georgia | Nikoloz Basilashvili | 74%
|
| 23 | Spain | Pablo Carreño Busta | 74%
|
| 24 | Spain | Roberto Bautista Agut | 74%
|
| 27 | Canada | Denis Shapovalov | 72%
|
| 91 | Great Britain | Cameron Norrie | 70%
|
| 39 | USA | Frances Tiafoe | 70%
|
| 35 | Australia | Nick Kyrgios | 70%
|
| 66 | Switzerland | Stan Wawrinka | 69%
|
| 31 | Australia | Alex de Minaur | 67%
|
| 87 | Poland | Hubert Hurkacz | 67%
|
| 26 | France | Richard Gasquet | 66%
|
| 25 | South Korea | Hyeon Chung | 62%
|
| 43 | Chile | Nicolás Jarry | 59%
|
| 85 | Chile | Cristian Garín | 57%
|
| 48 | Serbia | Dušan Lajović | 56%
|
| 36 | Hungary | Márton Fucsovics | 56%
|
| 42 | France | Adrian Mannarino | 54%
|
| 30 | France | Gilles Simon | 51%
|
| 44 | Portugal | Joáo Sousa | 49%
|
| 14 | Great Britain | Kyle Edmund | 49%
|
| 52 | France | Benoît Paire | 48%
|
| 47 | Bosnia and Herzegovina | Damir Džumhur | 46%
|
| 94 | Serbia | Laslo Djere | 46%
|
| 71 | Czech Republic | Tomas Berdych | 46%
|
| 75 | Japan | Yoshihito Nishioka | 46%
|
| 57 | Germany | Jan-Lennard Struff | 44%
|
| 100 | USA | Reilly Opelka | 44%
|
| 84 | France | Ugo Humbert | 44%
|
| 64 | Spain | Feliciano López | 43%
|
| 32 | France | Lucas Pouille | 43%
|
| 89 | Uruguay | Pablo Cuevas | 43%
|
| 51 | USA | Sam Querrey | 43%
|
| 28 | Spain | Fernando Verdasco | 39%
|
| 95 | Serbia | Filip Krajinović | 38%
|
| 20 | Italy | Marco Cecchinato | 38%
|
| 65 | Spain | Albert Ramos-Viñolas | 36%
|
| 93 | Uzbekistan | Denis Istomin | 36%
|
| 96 | Latvia | Ernests Gulbis | 36%
|
| 72 | Australia | Jordan Thompson | 36%
|
| 53 | Kazakhstan | Mikhail Kukushkin | 36%
|
| 99 | Moldova | Radu Albot | 36%
|
| 73 | Spain | Roberto Carballés Baena | 36%
|
| 70 | Canada | Vasek Pospisil | 36%
|
| 37 | Italy | Andreas Seppi | 34%
|
| 33 | USA | Steve Johnson | 34%
|
| 83 | Australia | Bernard Tomic | 31%
|
| 92 | Belarus | Ilya Ivashka | 31%
|
| 40 | France | Jérémy Chardy | 31%
|
| 67 | Slovenia | Aljaž Bedene | 30%
|
| 55 | France | Pierre-Hugues Herbert | 30%
|
| 38 | Australia | John Millman | 28%
|
| 34 | Germany | Philipp Kohlschreiber | 28%
|
| 77 | Japan | Taro Daniel | 28%
|
| 58 | Argentina | Guido Pella | 26%
|
| 81 | Spain | Jaume Munar | 26%
|
| 45 | Tunisia | Malek Jaziri | 26%
|
| 80 | Argentina | Federico Delbonis | 25%
|
| 90 | Czech Republic | Jiří Veselý | 25%
|
| 56 | Argentina | Leonardo Mayer | 25%
|
| 82 | Spain | Pablo Andújar | 21%
|
| 78 | USA | Mackenzie McDonald | 20%
|
| 60 | Romania | Marius Copil | 20%
|
| 41 | Slovakia | Martin Kližan | 20%
|
| 50 | Netherlands | Robin Haase | 20%
|
| 61 | USA | Tenny Sandgren | 18%
|
| 97 | Spain | Marcel Granollers | 16%
|
| 46 | Australia | Matthew Ebden | 15%
|
| 74 | Germany | Maximilian Marterer | 15%
|
| 98 | Russia | Evgeny Donskoy | 13%
|
| 88 | Bosnia and Herzegovina | Mirza Bašić | 13%
|
| 62 | USA | Ryan Harrison | 13%
|
| 63 | USA | Denis Kudla | 11%
|
| 59 | Germany | Peter Gojowczyk | 11%
|
| 76 | USA | Bradley Klahn | 7%
|
| 79 | Argentina | Guido Andreozzi | 5%
|
| 86 | Slovakia | Jozef Kovalik | 5%
|