Fred Stolle defeated John Newcombe 4–6 12–10 6–3 6–4 in the final to win the Men's Singles title at the 1966 U.S. National Championships.

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The seeded players are listed below. Fred Stolle is the champion; others show the round in which they were eliminated.

Single skating is a discipline of figure skating, wherein a single person skates alone. Men's singles and ladies' singles are both Olympic disciplines and are both governed by the International Skating Union. The other Olympic figure skating events are pair skating and ice dancing. Single skaters perform jumps, spins, footwork, spirals, and other moves in the field as part of their competition programs.

Single skating competitions consist of a short program and free skating (often called the "long program"), usually performed within a day or two of each other. At some large competitions, including the World Figure Skating Championships and European Figure Skating Championships, there is a cut after the short program and a skater must perform well enough in the short program to advance to the free skating portion of the competition. Skaters are separated into warm-up groups, and generally there is a draw to decide the skating order. For the long program, the warm-up groups are organized according to a skater's placement after the short program, making skating in the "final group" (or the top six skaters after the short program) a goal of many competitors.

Rafael Osuna Herrera (September 15, 1938 – June 4, 1969) is the most successful tennis player in the history of Mexico. He was born in Mexico City, Mexico, and is best remembered for his singles victory at the U.S. Open Championships in 1963, winning Wimbledon Doubles championships twice, the U.S. Open Championships doubles once, and for leading Mexico to its only Davis Cup Final round appearance in 1962. He is the only Mexican to date to be inducted into the International Tennis Hall of Fame, in 1979.

His first successes as an athlete occurred before he was ten years old, when he competed in the open category of the Mexican National Table Tennis Championships. In the course of the tournament, he upset the Mexico City Table Tennis Champion in singles, a feat remarkable both for Osuna's young age and the fact that it was his first tournament. Osuna also won the Doubles Championship, with Alfredo Ramos Uriarte as his partner. From age 10 to 14 he was ranked in the top 10 in Mexico's Open singles in table tennis.

Maria Esther Andion Bueno (born October 11, 1939) is a former professional tennis player from Brazil. During her 11-year career (plus a two-year comeback in 1976-77), she won 19 Major titles (seven singles, 11 women's doubles, one mixed doubles).

In 1960, Bueno became the first woman ever to win all four Grand Slam double titles in one year (three with Darlene Hard and one with Christine Truman Janes).

Bueno began playing tennis at a very young age and, without having received any formal training, won her first tournament at age 12. She was 14 when she captured her country’s women's singles championship.

Joining the international circuit in 1958, Bueno won the singles title at the Italian Championships and the first of her Grand Slam titles, capturing the women's doubles at Wimbledon with Althea Gibson.

The following year, Bueno won her first singles title at Wimbledon, defeating Darlene Hard in the final. She also won the singles title at the U.S. Championships, earning the World No. 1 ranking for 1959 and the Associated Press Female Athlete of the Year award. Bueno was the first non-North-American woman (she is an American - South American - woman) to capture both Wimbledon and the U.S. Championships in the same calendar year. In her native Brazil, she returned as a national heroine, honored by the country’s president and given a ticker-tape parade on the streets of São Paulo.

Manuel Martínez Santana, best known as Manolo Santana, (born 10 May 1938 in Madrid) is a former tennis player from Spain who was ranked World No. 1 in 1966. He was born in Madrid.

Before winning Wimbledon he was quoted as saying "The grass is just for cows."^{[citation needed]} He thought that tennis should be played on artificial surfaces as opposed to lawn tennis courts like the ones at Wimbledon. This statement has been repeated throughout the years by numerous players including Ivan Lendl, Marat Safin, Marcelo Ríos, and Jan Kodeš (despite his 1973 victory at Wimbledon).

In 1965, Santana, who had begun his career as a ball boy and "picked up" the game, led Spain to unexpected victory over the US in the Davis Cup, and he became a national hero. Despite his previous Grand Slam successes in the French Championships (1961, 1964) and the U.S. Championships (1965), Santana's win at the 1966 Wimbledon lawn tennis championships was a surprise, where he defeated the sixth seed Dennis Ralston 6–4, 11–9, 6–4. This was his last Grand slam title. His last big tournament win was in 1970 by winning Barcelona where he defeated Rod Laver 6–4 6–3 6–4. He also captured the doubles title in Barcelona that year when he teamed with L. Hoad to defeat R. Laver/A. Gimeno 6–4 9–7 7–5. He was named to the Hall of Fame in 1984.