Quarterfinalist Leaders

I promised some statistics related posts a few days ago so here's some stats based on the quarterfinalists at ATP and WTA tour events from 2013 and 2014.  I like to view the number of quarterfinals reached as a measure of consistency and it also highlights some lower ranked players who seem to excel at small events but can't do much at Masters and majors.

Men's Leaders
David Ferrer (ESP) 34
Tomas Berdych (CZE) 28
Rafael Nadal (ESP) 26
Novak Djokovic (SRB) 25
Roger Federer (SUI) 25
Andy Murray (GBR) 24
Stan Wawrinka (SUI) 20
Milos Raonic (CAN) 19
Fabio Fognini (ITA) 18
Grigor Dimitrov (BUL) 17
Richard Gasquet (FRA) 17
Tommy Haas (GER) 16
John Isner (USA) 16
Nicolas Almagro (ESP) 15
Kevin Anderson (RSA) 15
Marin Cilic (CRO) 15
Ernests Gulbis (LAT) 15
Philipp Kohlschreiber (GER) 15
Kei Nishikori (JPN) 15
Gilles Simon (FRA) 15
Jo-Wilfried Tsonga (FRA) 15

Women's Leaders
Agnieszka Radwanska (POL) 26
Serena Williams (USA) 23
Sara Errani (ITA) 21
Angelique Kerber (GER) 21
Petra Kvitova (CZE) 21
Caroline Wozniacki (DEN) 20
Jelena Jankovic (SRB) 17
Na Li (CHN) 17
Carla Suarez Navarro (ESP) 17
Simona Halep (ROU) 16
Ana Ivanovic (SRB) 16
Maria Sharapova (RUS) 16
Roberta Vinci (ITA) 14
Victoria Azarenka (BLR) 13
Eugenie Bouchard (CAN) 13
Dominika Cibulkova (SVK) 12
Kirsten Flipkens (BEL) 12
Svetlana Kuznetsova (RUS) 12
Ekaterina Makarova (RUS) 12
Lucie Safarova (CZE) 12

Best Countries (ATP/WTA)
Spain 222
France 147
United States 144
Germany 130
Czech Republic 119
Russia 107
Italy 106
Serbia 78
Switzerland 63
Argentina 58
Romania 54
Croatia 47
Poland 47
Slovakia 46
Australia 45
Canada 45
China 39
Japan 34
United Kingdom 29
Ukraine 27

-I like to look at those numbers as a measure of a country's overall depth.  Not surprising to see Spain at the top.  This is a measure over the past 2 years.

Number of Different Players to Reach a Tour Quarterfinal (2014 only)
United States 26
Spain 22
Germany 20
France 18
Russia 15
Czech Republic 14
Italy 10
Argentina 9
Croatia 9
Australia 8
Romania 8
China 7
Serbia 7
Slovakia 7
Japan 6
Switzerland 6
Poland 5

Highest Ranked Country with a single player (2014 only): Latvia (Gulbis) 11

Countries with 1 QF appearance in 2013/14
Dominican Republic (Estrella Burgos)
Georgia (Tatishvili)
India (Bhambri)
South Korea (Jang)
Sweden (Larsson)
Turkey (Buyukakcay)