| Country | Number One | % Correct |
|---|---|---|
| UK | Andy Murray | 100%
|
| Serbia | Novak Djokovic | 100%
|
| Spain | Rafael Nadal | 100%
|
| Switzerland | Stanislas Wawrinka | 100%
|
| Bulgaria | Grigor Dimitrov | 82%
|
| Japan | Kei Nishikori | 82%
|
| Canada | Milos Raonic | 82%
|
| France | Gael Monfils | 76%
|
| USA | John Isner | 76%
|
| Czech Republic | Tomas Berdych | 76%
|
| Germany | Alexander Zverev | 71%
|
| Austria | Dominic Thiem | 71%
|
| Argentina | Juan Martin del Potro | 71%
|
| Croatia | Marin Cilic | 71%
|
| Australia | Nick Kyrgios | 71%
|
| Belgium | David Goffin | 65%
|
| South Africa | Kevin Anderson | 59%
|
| Luxembourg | Gilles Muller | 53%
|
| Cyprus | Marcos Baghdatis | 53%
|
| Uruguay | Pablo Cuevas | 47%
|
| Netherlands | Robin Haase | 41%
|
| Ukraine | Alexandr Dolgopolov | 35%
|
| Portugal | Joao Sousa | 29%
|
| Brazil | Thomaz Bellucci | 24%
|
| Kazakhstan | Mikhail Kukushkin | 18%
|
| Italy | Paolo Lorenzi | 18%
|
| Russia | Andrey Kuznetsov | 12%
|
| Colombia | Santiago Giraldo | 6%
|