Frank Kovacs (December 4, 1919 – February 1990) was an American amateur and professional tennis player in the mid-20th century. He won the U.S. National Indoor Tennis Championships singles title in 1941. He won the World Professional Championships tournament in 1945 in San Francisco. Kovacs was successful on clay and won the Great Lakes Professional Clay Court Championships near Chicago in 1946, defeating Riggs in the final, and five U.S. Professional Clay Court Championships from 1948 to 1953. Kovacs won the International Professional Championships or U.S. Professional Championships at Cleveland in 1951. He also won the U.S. Professional Challenge Tour in 1947 against Bobby Riggs. Kovacs was ranked the world No. 1 professional tennis player in two different years, by the WPTA (World Professional Tennis Association) for 1945 and by the PTPA (Professional Tennis Players Association) for 1951. Biography Kovacs' father was a Hungarian immigrant upholsterer. In his youth he had tennis lessons at the Berkeley Tennis Club. Kovacs had a reputation as an eccentric tennis player and showman on the court. Once, serving for a match point, he tossed three balls in the air - hitting the middle one for an ace. He was known to jump into the stands to applaud his opponents, and once staged a sit-down strike during a match. A newspaper article in 1940 said "Kovacs' comments as he races about the court are remindful of Bob Hope or Milton Berle before a microphone, and that these ad libs are spoken in a voice that overcomes the poor acoustics of a tennis court and are audible to everyone in the gallery." Jack Kramer writes in his autobiography that Kovacs "was a big attractive guy, with a great smile—sort of a Nastase type, only harmless, not mean." He goes on to say that during an important match against Joe Hunt "Kovacs looked up at an airplane. Hunt mimicked him, so Kovacs lay down for a clearer view, and Hunt did the same, and they were both soon lying flat out on the turf watching an airplane fly by while the fans watched them." Career Amateur 1936 In July Kovacs reached the quarter finals of the Oregon championships in Portland before losing to Elwood Cooke. Later in the month he lost in the quarter finals of the Washington State championships in Seattle to Dick Bennett. 1937 In May Kovacs won the Central California championships beating Ed Amark