Francisco Olegario Segura Cano, better known as Pancho "Segoo" Segura, was a leading tennis player of the 1940s and 1950s, both as an amateur and as a professional. He was born in Guayaquil, Ecuador, but moved to the United States in 1940. Throughout his amateur career he was listed by the USTA as a "foreign" player resident in the U.S. As a professional player, he was referred to as the "Ecuadorian champ who now lives in New York City". After acquiring U.S. citizenship in 1991 at the age of seventy, Segura was a citizen of both countries, although he never represented the U.S. in tennis competition.

Tennis is a racket sport that is played either individually against a single opponent (singles) or between two teams of two players each (doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court. The object of the game is to manoeuvre the ball in such a way that the opponent is not able to play a valid return. The player who is unable to return the ball validly will not gain a point, while the opposite player will.