itf网球：
ITF (International Tennis Federation) is the governing body of world tennis. It is responsible for organizing and regulating tennis tournaments and events at the international level, including the four Grand Slam tournaments, Davis Cup, and Fed Cup. ITF also sets the rules and regulations for tennis and manages the rankings of players. Tennis players who aspire to play at the professional level often start their careers by competing in ITF tournaments.
付饶 网球：
你好，你是想询问关于网球的问题吗？如果有什么需要帮助的，请告诉我，我会尽力回答。