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 1978 New Zealand Open, also known by its sponsored name Benson & Hedges New Zealand Open, was a men's professional tennis tournament held in Auckland, New Zealand. It was a non-tour event, i.e. not part of the 1978 Grand Prix circuit. It was the 11th edition of the tournament and was played on outdoor hard courts and was held from 2 January through 8 January 1978. Eliot Teltscher won the singles title.
The 1979 New Zealand Open was a men's professional tennis tournament. The event was part of the 1979 Grand Prix circuit and was held in Auckland, New Zealand. It was the 12th edition of the tournament and was played on outdoor hardcourts and was held from 2 January through 8 January 1979. Eighth-seeded Tim Wilkison won the singles title.
The 1978 Romika Cup was a men's Grand Prix Tennis Circuit tournament held in Munich, West Germany. It was the 62nd edition of the tournament and was held from 23 May through 28 May 1978. It is now part of the ATP Tour. First-seeded Guillermo Vilas won the singles title, his second after 1975.
The 1978 Queen's Club Championships, also known by its sponsored name Rawlings International, was a men's tennis tournament played on outdoor grass courts at the Queen's Club in London in the United Kingdom that was part of the 1978 Colgate-Palmolive Grand Prix circuit. It was the 76th edition of the tournament and was held from 19 June through 24 June 1978. Unseeded Tony Roche won the singles title.
The 1978 ABN World Tennis Tournament was a men's tennis tournament played on indoor carpet courts at Rotterdam Ahoy in the Netherlands. It was a World Championship Tennis (WCT) event that was part of the 1978 Colgate-Palmolive Grand Prix circuit. It was the sixth edition of the tournament and was held from 3 April through 9 April 1978. First-seeded Jimmy Connors won the singles title.
The 1978 Swedish Open was a men's tennis tournament played on outdoor clay courts held in Båstad, Sweden. It was part of the 1978 Grand Prix circuit. It was the 31st edition of the tournament and was held from 17 July through 23 July 1978. First-seeded Björn Borg won the singles title, his second at the event after 1974.
The 1980 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France that was part of the 1980 Volvo Grand Prix circuit. It was the 74th edition of the tournament and was held from 31 March through 6 April 1980. First-seeded Björn Borg won the singles title, his third after 1977 and 1979.
The 1978 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France. The tournament was part of the WCT Tour, which was incorporated into the 1978 Colgate-Palmolive Grand Prix circuit. It was the 72nd edition of the event and was held from 10 April through 16 April 1978. Raúl Ramírez, the no. 5 seed, won the singles title.
The 1978 Pacific Southwest Open, also known under its sponsorship name 1978 ARCO Open, was a men's tennis tournament played on indoor carpet courts at the Pauley Pavilion in Los Angeles, California in the United States. The event was part of the Grand Prix tennis circuit. It was the 52nd edition of the tournament and was held from September 18 through September 25, 1978. Seventh-seeded Arthur Ashe won the singles title as well as 200 ranking points.
The 1978 Suisse Open Gstaad was a men's tennis tournament played on outdoor clay courts in Gstaad, Switzerland. It was the 33rd edition of the tournament and was held from 10 July through 16 July 1978. The tournament was part of the Grand Prix tennis circuit with a total prize money available of $75,000. First-seeded Guillermo Vilas won the singles title, his second at the tournament after 1974.
The 1978 New South Wales Open, also known by its sponsored name Marlboro New South Wales Open, was a combined men's and women's tennis tournament played on outdoor grass courts at the White City Stadium in Sydney, Australia. The men's event was part of the 1978 Colgate-Palmolive Grand Prix circuit while the women's event was art of the 1979 Colgate Series. It was the 86th edition of the event and was held from 18 December through 24 December 1978. The singles titles were won by unseeded Tim Wilkison and second-seeded Dianne Fromholtz.
The 1978 German Open was a combined men's and women's tennis tournament played on outdoor red clay courts. The men's tournament was part of the 1978 Colgate-Palmolive Grand Prix circuit, categorized as a four-star event, while the women's tournament was part of the Colgate Series and classified as an A category event. It was the 70th edition of the tournament and took place at the Am Rothenbaum in Hamburg, West Germany, from 15 May through 21 May 1978. Guillermo Vilas and Mima Jaušovec, both first-seeded, won the singles titles.
The 1980 Birmingham Open was a men's tennis tournament played on indoor carpet courts. It was the eighth and last edition of the Grand Prix Birmingham, and part of the 1980 Volvo Grand Prix circuit. It took place in Birmingham, Alabama, United States from January 14 through January 20, 1980. First-seeded Jimmy Connors won the singles title, his sixth at the event.
The 1978 Indian Open was a men's tennis tournament played on outdoor clay courts in Calcutta, India. It was the sixth edition of the tournament and was held from 27 November through 3 December 1978. The tournament was part of the 1978 Grand Prix tennis circuit. Fifth-seeded Yannick Noah won the singles title.
The 1978 Chilean International Championships was a men's tennis tournament played on outdoor clay courts in Santiago, Chile that was part of the Grand Prix tennis circuit. It was the third edition of the tournament and was held from 27 November through 3 December 1978. Third-seeded José Luis Clerc won the singles title.
The 1979 Santiago International Classic was a men's tennis tournament played on outdoor clay courts in Santiago, Chile that was part of the Grand Prix tennis circuit. It was the fourth edition of the tournament and was held from 26 November through 2 December 1979. Second-seeded Hans Gildemeister won the singles title.
The 1979 U.S. National Indoor Championships was a men's tennis tournament played on indoor carpet courts at the Racquet Club of Memphis in Memphis, Tennessee in the United States. The event was part of the 1979 Colgate-Palmolive Grand Prix circuit. It was the tenth edition of the tournament in the open era and was held from February 26 through March 4, 1979. First-seeded Jimmy Connors won the singles title and $40,000 first-prize money. It was his fifth singles title at the event after 1973–75 and 1978 which equaled the tournament record set by Wylie C. Grant.
The 1978 Hibernia Interfest Tennis Classic, also known as the New Orleans Grand Prix, was a men's tennis tournament played on indoor carpet courts at the Louisiana Superdome in New Orleans, Louisiana in the United States that was part of the 1978 Colgate-Palmolive Grand Prix. It was the inaugural edition of the tournament and was held from July 31 through August 6, 1978. First-seeded Roscoe Tanner won the singles title.
The 1979 New Orleans Tennis Festival was a men's tennis tournament played on indoor carpet courts at the New Orleans Municipal Auditorium in New Orleans, Louisiana in the United States that was part of the World Championship Tennis series of the 1979 Colgate-Palmolive Grand Prix. It was the second edition of the tournament and was held from March 25 through March 25, 1979. Third-seeded John McEnroe won the singles title and earned $30,200 first-prize money.
Roscoe Tanner 
Wojciech Fibak 
Ismail El Shafei 
Brian Fairlie 
Raymond Moore 
