I think it's safe to say that spain is the best country by far. they have aroun 14 top100 players and 3 top10 guys.no other country can keep up with them. but who is behind them? I think no.2-5 is much closer. two factors have to be considered: 1)number of very good (top100) players 2)players at the top-top 10 players have more value then top100 players, so a country that has 3 top10 players but only 5 top100 players (2 more) is better than a country with 7 top100 players but none in the top10. so consider both. many top100 players is great, top players give extra points. So who is behind spain? I think it's between serbia, croatia, france, USA and argentina. russia has slipped at the top a little. and then there are countries like germany with ten top100 players (second most to spain) but no top players or switzerland with two top players (3 and 13) but nothing to back it up.