Clark Graebner is a retired American professional tennis player.
Stan Smith defeated Jan Kodeš in the final, 3–6, 6–3, 6–2, 7–6(5–3) to win the men's singles tennis title at the 1971 US Open.
Andrés Gimeno defeated Patrick Proisy in the final, 4–6, 6–3, 6–1, 6–1 to win the men's singles tennis title at the 1972 French Open. This was his first and only major title and, at the age of 34, he became the oldest first-time major champion in the Open Era.
Ken Rosewall defeated Tony Roche in the final, 2–6, 6–4, 7–6(5–2), 6–3 to win the men's singles tennis title at the 1970 US Open.
Arthur Ashe defeated Tom Okker in the final, 14–12, 5–7, 6–3, 3–6, 6–3 to win the men's singles tennis title at the 1968 U.S. Open. Ashe became the first African-American man to win a major.
Unseeded Fred Stolle defeated John Newcombe 4–6, 12–10, 6–3, 6–4 in the final to win the men's singles tennis title at the 1966 U.S. National Championships.
John Newcombe defeated Clark Graebner 6–4, 6–4, 8–6 in the final to win the men's singles title at the 1967 U.S. National Championships.
The 1972 Bristol Open, also known by its sponsored name W.D. & H.O. Wills Open Tournament, was a men's tennis tournament played on outdoor grass courts. The event was part of the 1972 Commercial Union Assurance Grand Prix circuit and classified as C category. It was played in Bristol, Great Britain and was held from 12 to 17 June 1972. Bob Hewitt won the singles title and earned $7,800 first-prize money.
The 1970 U.S. Clay Court Championships was a combined men's and women's tennis tournament that was part of the Grand Prix. It was held at the Woodstock Country Club in Indianapolis, Indiana in the United States and played on outdoor clay courts. It was the 2nd edition of the tournament in the Open Era and was held in from 27 July through 2 August. Cliff Richey and Linda Tuero won the singles titles.
The 1972 Rothmans International Tennis Tournament was a men's professional tennis tournament held on indoor carpet courts in the Royal Albert Hall in London, England. It was the third edition of the tournament and was held from 18 to 22 January 1972. It was part of the 1972 USLTA Indoor Circuit. Cliff Richey won the singles title and $6,960 in prize money after defeating Clark Graebner in a three-hour-and-six-minute final.
The 1971 Pacific Southwest Open was a combined men's and women's tennis tournament played on outdoor hard courts at the Los Angeles Tennis Center in Los Angeles, California in the United States and was part of the 1971 Grand Prix tennis circuit. It was the 45th edition of the tournament and ran from September 20 through September 26, 1971. Pancho Gonzales, aged 43, won the men's singles title and $10,000 first prize money.
The 1971 U.S. Clay Court Championships was a combined men's and women's tennis tournament that was part of the 1971 Grand Prix circuit and categorized as a Group B event. The event was held in Indianapolis, USA and played on outdoor clay courts. It was the 3rd edition of the tournament in the Open Era and was held in from August 16 through August 22, 1971. Željko Franulović and Billie Jean King won the singles titles.
The 1973 Louisville Open, also known as the First National Tennis Classic, was a men's tennis tournament played on outdoor clay courts at the Louisville Tennis Center in Louisville, Kentucky, USA. It was the fourth edition of the tournament and was held from 30 July through 5 August 1973. The tournament was part of the Grand Prix tennis circuit and categorized in Group A. The singles final was won by fourth-seeded Manuel Orantes who earned 80 Grand Prix points.
The 1973 U.S. National Indoor Tennis Championships was a men's tennis tournament held in Salisbury, Maryland. The event was part of the 1973 USLTA Indoor Circuit. It was the third edition of the tournament and was held from February 19 through February 24, 1994, and played on indoor hard courts. First-seeded Jimmy Connors won the singles title and $9,000 first-prize money.
The 1972 Baltimore International was a men's tennis tournament played on indoor carpet courts at the Towson State College in Baltimore, Maryland in the United States that was part of the 1972 USLTA Indoor Circuit. It was the inaugural edition of the event and was held from January 7 through January 9, 1972. Second-seeded Ilie Năstase won the singles title and earned $2,550 first-prize money.
The 1973 Baltimore International was a men's tennis tournament played on indoor carpet courts at the Towson State College in Baltimore, Maryland in the United States that was part of the 1973 USLTA Indoor Circuit. It was the second edition of the event and was held from January 3 through January 7, 1973. First-seeded Jimmy Connors won the singles title and earned $3,500 first-prize money.
The 1974 Baltimore International was a men's tennis tournament played on indoor carpet courts at the Towson State College in Baltimore, Maryland in the United States that was part of the 1974 USLTA Indoor Circuit. It was the third edition of the event and was held from January 29 through February 3, 1974. Sandy Mayer won the singles title.
The 1973 Birmingham International was a men's tennis tournament played on indoor carpet courts at the Birmingham Municipal Auditorium in Birmingham, Alabama, in the United States that was part of the 1973 USLTA Indoor Circuit. It was the inaugural edition of the event and was held from January 17 through January 20, 1973. Unseeded Sandy Mayer won the singles title but due to his amateur status he was not entitled to receive the $3,000 first-prize money.
The 1972 Equity Funding International, also known as the Washington Indoor, was a men's tennis tournament played on indoor carpet courts at the Georgetown University in Washington D.C. in the United States that was part of Group C of the 1972 Grand Prix circuit as well as of the 1972 USLTA Indoor Circuit. It was the inaugural edition of the tournament and was held from March 6 through March 12, 1972. First-seeded Stan Smith won the singles title and earned $5,000 first-prize money.
The 1972 Des Moines International was a men's tennis tournament played on indoor carpet courts at the Veterans Memorial Auditorium in Des Moines, Iowa in the United States that was part of the 1972 USLTA Indoor Circuit. It was the second edition of the event and was held from February 4 through February 6, 1972. Second-seeded Pancho Gonzales won the singles title and earned $3,000 first-prize money.
Clark Graebner [1] 
Jiří Hřebec / 
