The main indicator of successful European training program are WTA (Women's Professional Tennis Association) and ATP (Men's Professional Tennis Association) rankings. According to the latest world rankings there are only three USA women players and four men tennis players ranked in the top 50. The table below presents distribution of top 50 women and men according to nationality (or European region).
European, particularly eastern European style is based on making tennis training fun but also at the same time placing a lot of emphasis on hard work. Improvement is based on having a lot of passion for the sport, showing a lot drive for success and also ability to follow the directions. The training should also include technical, tactical and physical components.