Nearly half a century of Open Era tennis has witnessed world-class competition expand from a handful of dominant countries. Globalization has paved the way for more countries to grow their own tennis champions and legacies.
These changes are happening more rapidly as the 21st century has included upgraded viewing and communication technologies. And the Roger Federer-Rafael Nadal era has been instrumental in further expanding the popularity of their sport to the world.
The following slides will examine 30 different tennis countries. The first five slides list five countries which have not established much tennis tradition but have a chance to move up quickly behind young players.
The remaining slides will rank the Open Era legacies and current power for the top-25 tennis countries in the world. Each country will be scored on a 100-point scale:
40 percent of the weight will assess the country's Open Era legacy of ATP champions. Grand Slam titles and multiple champions are most important, especially if the success extends across generations. Davis Cup success is also assessed.
35 percent of the weight will assess the Open Era legacy of WTA champions and Fed Cup contributions.
20 percent of the weight is awarded to the recent relevance and success of the country, in this case beginning with the 21st century. This extra weight rewards modern success in a more globally competitive field.
5 percent of the weight is an outlook on the country's prospects for the next decade, which are a measure of the current power and future estimate of how well tennis will flourish.
This is a scale to recognize the many champions and achievements for each country. Most of these are from Europe and the Americas, but tennis is reaching out to new countries and fans.