Francisco Olegario Segura (June 20, 1921 – November 18, 2017), better known as Pancho "Segoo" Segura, was a leading tennis player of the 1940s and 1950s, both as an amateur and as a professional.
In 1950, 1951, and 1952, as a professional, he was the World No.
1 player in the USPLTA rankings.
He was born in Guayaquil, Ecuador, but moved to the United States in the late 1930s and was a citizen of both countries.
He is the only player to have won the Cleveland/Forest Hills US Pro and World Pro titles on three different surfaces (which he did consecutively from 1950–1952).
Segura's most potent shot was considered to be his double-handed forehand, which Wimbledon champions Jack Kramer and Lew Hoad named as the greatest single stroke they had ever faced.