No. 1
United States (Connors, McEnroe, Courier, Sampras, Agassi, Roddick)
Sweden (Borg, Wilander, Edberg)
Spain (Moya, Ferrero, Nadal)
Australia (Newcombe, Rafter, Hewitt)
Russia (Kafelnikov, Safin)
Swizerland (Federer)
Czechoslovakia (Lendl)
Brazil (Kuerten)
Romania (Nastase)
Serbia (Djokovic)
Germany (Becker)
Austria (Muster)
Chile (Rios)
No. 2
Croatia (Ivanisevic)
United Kingdom (Murray)
Argentina (Vilas)
Czech Republic (Korda)
No. 3
The Netherlands (Okker)
France (Noah)
Canada (Raonic)
No. 4
Italy (Panatta)
Mexico (Ramirez)
Ecuador (Gomez)
Ukraine (Medvedev)
Slovakia (Mecir)
Japan (Nishikori)
No. 6
RSA (Ferreira)
Slovakia (Kucera)
No. 8
Cyprus (Bhagdatis)
Bulgaria (Dimitrov)
No. 9
Thailand (Srichaphan)
Paraguay (Pecci)
USSR (Metreveli)
No. 10
Poland (Fibak)
Latvia (Gulbis)
No. 12
Hungary (Taroczy)
Yugoslavia (Pilic)
No. 13
Finland (Nieminen)
Belgium (Goffin)
No. 14
Marocco (El Aynaoui )
No. 16
India (Amritraj)
No. 18
Belarus (Mirnyi)
Israel (Mansdorf)
Peru (Yzaga)
No. 19
New Zeland (Lewis, Parun)
No. 21
Uruguay (Cuevas)
No. 22
Haiti (Agenor)
Zimbabwe (Black)
No. 28
Colombia (Giraldo)
No. 33
Kazakhstan (Golubev)
Taiwan (Lu)
Uzbekistan (Istomin)
No. 34
Egypt (El Shafei)
Luxembourg (Muller)
No. 35
Portugal (Sousa)
No. 36
Bolivia (Martinez)
South Korea (Lee)
No. 38
Armenia (Sargsian)
No. 39
Norway (Ruud)
No. 41
Denmark (Carlsen)
No. 42
Georgia (Labadze)
No. 43
Zemlija (Slovenia)
Dominican Republic (Estrella)
No. 44
Pakistan (Rahim)
No. 47
Tunisia (Jaziri)
No. 50
Lithuania (Berankis)
No. 52
Nigeria (Odizor)
No. 55
Costa Rica (Marin)
No. 71
Estonia (Zopp)
No. 74
Venezuela (Pereira)
Senegal (Doumbia)
No. 77
Turkey (Ilhan)
Bosnia and Herezegovina (Dzumhur)
No. 85
Moldova (Albot)
No. 96
The Bahamas (Knowles, Smith)
No. 98
Jamaica (Brown)*
No. 100
Kenya (Wekesa)
* Brown was 89 in ATP ranking (11.01.2011), but he represents Germany from October 2010
United States (Connors, McEnroe, Courier, Sampras, Agassi, Roddick)
Sweden (Borg, Wilander, Edberg)
Spain (Moya, Ferrero, Nadal)
Australia (Newcombe, Rafter, Hewitt)
Russia (Kafelnikov, Safin)
Swizerland (Federer)
Czechoslovakia (Lendl)
Brazil (Kuerten)
Romania (Nastase)
Serbia (Djokovic)
Germany (Becker)
Austria (Muster)
Chile (Rios)
No. 2
Croatia (Ivanisevic)
United Kingdom (Murray)
Argentina (Vilas)
Czech Republic (Korda)
No. 3
The Netherlands (Okker)
France (Noah)
Canada (Raonic)
No. 4
Italy (Panatta)
Mexico (Ramirez)
Ecuador (Gomez)
Ukraine (Medvedev)
Slovakia (Mecir)
Japan (Nishikori)
No. 6
RSA (Ferreira)
Slovakia (Kucera)
No. 8
Cyprus (Bhagdatis)
Bulgaria (Dimitrov)
No. 9
Thailand (Srichaphan)
Paraguay (Pecci)
USSR (Metreveli)
No. 10
Poland (Fibak)
Latvia (Gulbis)
No. 12
Hungary (Taroczy)
Yugoslavia (Pilic)
No. 13
Finland (Nieminen)
Belgium (Goffin)
No. 14
Marocco (El Aynaoui )
No. 16
India (Amritraj)
No. 18
Belarus (Mirnyi)
Israel (Mansdorf)
Peru (Yzaga)
No. 19
New Zeland (Lewis, Parun)
No. 21
Uruguay (Cuevas)
No. 22
Haiti (Agenor)
Zimbabwe (Black)
No. 28
Colombia (Giraldo)
No. 33
Kazakhstan (Golubev)
Taiwan (Lu)
Uzbekistan (Istomin)
No. 34
Egypt (El Shafei)
Luxembourg (Muller)
No. 35
Portugal (Sousa)
No. 36
Bolivia (Martinez)
South Korea (Lee)
No. 38
Armenia (Sargsian)
No. 39
Norway (Ruud)
No. 41
Denmark (Carlsen)
No. 42
Georgia (Labadze)
No. 43
Zemlija (Slovenia)
Dominican Republic (Estrella)
No. 44
Pakistan (Rahim)
No. 47
Tunisia (Jaziri)
No. 50
Lithuania (Berankis)
No. 52
Nigeria (Odizor)
No. 55
Costa Rica (Marin)
No. 71
Estonia (Zopp)
No. 74
Venezuela (Pereira)
Senegal (Doumbia)
No. 77
Turkey (Ilhan)
Bosnia and Herezegovina (Dzumhur)
No. 85
Moldova (Albot)
No. 96
The Bahamas (Knowles, Smith)
No. 98
Jamaica (Brown)*
No. 100
Kenya (Wekesa)
* Brown was 89 in ATP ranking (11.01.2011), but he represents Germany from October 2010