Tennis - Tennis - Professional and open tennis: As tennis began to establish its popularity, there was a need for professionals to coach and to organize, but, unlike real tennis, there were no competitions in which professionals could play. This changed in 1926 when Charles C. (“Cash and Carry”) Pyle, a successful sports promoter in the United States, offered Suzanne Lenglen $50,000 to go ...
https://www.britannica.com/sports/tennis/Professional-and-open-tennis