World Championship Tennis (WCT) was a tour for professional male tennis players established in 1968 and lasted until the emergence of the ATP Tour in 1990. A number of tennis tournaments around the world were affiliated with WCT and players were ranked in a special WCT ranking according to their results in those tournaments.
The 1969 US Open was a tennis tournament that took place on the outdoor grass courts at the West Side Tennis Club, Forest Hills in New York City, USA. The tournament ran from 28 August until 9 September. It was the 89th staging of the tournament, and the fourth Grand Slam tennis event of 1969.
Rod Laver defeated Andrés Gimeno in the final, 6–3, 6–4, 7–5 to win the men's singles tennis title at the 1969 Australian Open. It was the first step in an eventual Grand Slam for Laver. This was the first edition of the tournament to be open to professional players, marking a period in tennis history known as the Open Era.
Rod Laver defeated the defending champion Ken Rosewall in the final, 6–4, 6–3, 6–4 to win the men's singles tennis title at the 1969 French Open. It was the second leg of his eventual second Grand Slam, which remains the only Grand Slam achieved in men's singles tennis in the Open Era.
Rod Laver defeated Tony Roche in the final, 7–9, 6–1, 6–2, 6–2 to win the men's singles tennis title at the 1969 US Open. With the win, he completed the Grand Slam, and remains the only man in the Open Era to do so in singles. Laver also became the second man in history to complete the double career Grand Slam, after Roy Emerson.
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.
The 1972 Rotterdam Indoors was a men's tennis tournament played on indoor carpet courts. It was the inaugural edition of the event known that year as the Rotterdam Indoors, and was part of the 1972 World Championship Tennis circuit. It took place at the Rotterdam Ahoy indoor sporting arena in Rotterdam, Netherlands, from 12 November through 18 November 1972. Second-seeded Arthur Ashe won the singles title.
The 1970 U.S. Professional Indoor was a WCT tennis tournament played on indoor carpet courts. It was played at the Spectrum in Philadelphia, Pennsylvania in the United States. It was the third edition of the tournament and was held from February 2 through February 8, 1970. First-seeded Rod Laver won his second consecutive singles title at the event.
The 1972 U.S. Professional Indoor was a men's tennis tournament played on indoor carpet courts. It was played at the Spectrum in Philadelphia, Pennsylvania in the United States that was part of the 1972 World Championship Tennis circuit. It was the fifth edition of the tournament and was held from February 8 through February 13, 1972. Total attendance for the tournament was 57,282. First-seeded Rod Laver won the singles title, his third at the event after 1969 and 1970.
The 1974 U.S. Professional Indoor was a men's tennis tournament that was part of the WCT circuit and played on indoor carpet courts at the Spectrum in Philadelphia, Pennsylvania in the United States. It was the seventh edition of the tournament and was held from January 21 through January 27, 1974. Sixth-seeded Rod Laver won the singles title, his fourth at the event after 1969, 1970 and 1972.
The 1976 U.S. Pro Indoor was a men's tennis tournament played on indoor carpet courts that was part of the WCT circuit. It was the 9th edition of the tournament and was played at the Spectrum in Philadelphia, Pennsylvania in the United States from January 26 through February 1, 1976. First-seeded Jimmy Connors won the singles title.
The 1980 U.S. Pro Indoor was a men's tennis tournament played on indoor carpet courts that was part of World Championship Tennis (WCT) category of tournaments of the 1980 Volvo Grand Prix circuit. It was played at the Spectrum in Philadelphia, Pennsylvania in the United States and was held from January 21 through January 27, 1980. First-seeded Jimmy Connors won the singles title after a final that lasted three hours and 30 minutes and earned $40,000 first-prize money. It was his fourth singles title at the tournament which equalled the record held by Rod Laver.
The 1970 Queen's Club Championships, also known by its sponsored name Rothmans Open London Grass Court Championships, was a combined men's and women's tennis tournament played on grass courts at the Queen's Club in London in the United Kingdom. It was a non-tour event, i.e. not part of the 1970 Pepsi-Cola Grand Prix or 1970 World Championship Tennis circuit. It was the 71st edition of the tournament and was held from 15 June through 20 June 1970. First-seeded Rod Laver and Margaret Court won the singles titles. In the final Court was 2–6, 0–5 and 0–15 down against Winnie Shaw but recovered by winning 14 of the last 17 games.
The 1973 Denver WCT, also known as the 1973 United Bank Tennis Classic for sponsorship reasons, was the second edition of the tennis event. It was held on indoor carpet courts in Denver, Colorado. The tournament was held between the April 23 and April 30, 1973. The tournament was part of the World Championship Tennis tour, and was part of the Group B circuit. As a result the defending champions Rod Laver, of the doubles and singles, along with his doubles partner Roy Emerson, were ineligible to compete. Ninth-seeded Mark Cox won the singles title.
The 1969 German Open Championships was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 61st edition of the tournament, the second one in the Open Era, and the first edition to offer official prize money. The event took place at the Am Rothenbaum in Hamburg, West Germany, from 5 August through 11 August 1969. First-seeded Tony Roche and Judy Tegart won the singles titles. Tegart also won the doubles and mixed doubles titles.
The 1972 Charlotte Tennis Classic, also known by its sponsored name North Carolina National Bank Tennis Classic, was a men's tennis tournament played on outdoor clay courts that was part of the World Championship Tennis (WCT) circuit. It was the second edition of the tournament and was held from April 18 through April 23, 1972 at the Julian J. Clark Tennis Stadium, owned by the Olde Providence Racquet Club in Charlotte, North Carolina in the United States. Second-seeded Ken Rosewall won the singles title.
The 1972 Fidelity WCT Tournament, also known as the Richmond WCT, was a men's professional tennis tournament that was part of the Group A of the 1972 World Championship Tennis circuit. It was held on indoor carpet courts at the Richmond Coliseum in Richmond, Virginia in the United States. It was the seventh edition of the tournament and was held from February 2 through February 6, 1972. First-seeded Rod Laver won the singles title and earned $10,000 first-prize money.
The 1973 Union Trust Classic, also known as the Washington Indoor, was a men's tennis tournament played on indoor carpet courts in Merrifield, Virginia in the United States that was part of Group B of the 1973 World Championship Tennis circuit. It was the second edition of the tournament and was held from March 19 through March 25, 1973. Unseeded Tom Okker won the singles title and earned $10,000 first-prize money after his opponent in the final, Arthur Ashe, failed to convert two matchpoints in the final set.
The 1971 Rothmans International Quebec, also known as the Quebec International Open or Quebec WCT, was a men's professional tennis tournament that was part of the 1971 World Championship Tennis circuit. It was held on indoor carpet courts at Laval University in Quebec City, Quebec in Canada. It was the inaugural edition of the tournament and was held from 26 July through 1 August 1971. Tom Okker won the singles title and earned $10,000 first-prize money.
The 1972 Rothmans International Quebec, also known as the Quebec International Open or Quebec WCT, was a men's professional tennis tournament that was part of the 1972 World Championship Tennis circuit. It was held on indoor carpet courts at the Laval University sports centre in Quebec City, Quebec in Canada. It was the second edition of the tournament and was held from 9 April through 16 April 1972. Seventh-seeded Marty Riessen won the singles title and earned $10,000 first-prize money.
Rod Laver [2] 
Tom Okker / 
Marty Riessen [3]