1973 Grand Prix (tennis)

1973 Grand Prix circuit

Năstase won 14 titles in the year.
Details
Duration	3 January – 26 December
Edition	4th
Tournaments	72
Achievements (singles)
Most tournament titles	Ilie Năstase (14)
Most tournament finals	Ilie Năstase (17)
Prize money leader	Ilie Năstase
Points leader	Ilie Năstase
← 1972 1974 →

The 1973 Commercial Union Assurance Grand Prix was a tennis circuit administered by the International Lawn Tennis Federation (ILTF) which served as a forerunner to the current Association of Tennis Professionals (ATP) World Tour and the Women's Tennis Association (WTA) Tour.^[1] The circuit consisted of the four modern Grand Slam tournaments and open tournaments recognised by the ILTF. This article covers all tournaments that were part of that year's Men's Grand Prix. The Commercial Union Assurance Masters and Davis Cup Final are included in this calendar but did not count towards the Grand Prix.^[2]

Schedule

Key

December 1972

Week of	Tournament	Champion	Runner-up	Semifinalists	Quarterfinalists
26 December	Australian Open Melbourne, Australia Grand Slam $27,450 – Grass – 56S/32D Singles Draw – Doubles Draw	John Newcombe 6–3, 6–7, 7–5, 6–1	Onny Parun	Karl Meiler Patrick Proisy	Wanaro N'Godrella Alex Metreveli John Cooper Bob Carmichael
		Mal Anderson John Newcombe 6–3, 6–4, 7–6	John Alexander Phil Dent

May

Week of	Tournament	Champion	Runner-up	Semifinalists	Quarterfinalists
7 May	Rothmans British Hard Court Championships Bournemouth, Great Britain Clay – 64S/32D/32XD	Adriano Panatta 6–8, 7–5, 6–3, 8–6	Ilie Năstase	Barry Phillips-Moore Ross Case	Geoff Masters Buster Mottram François Jauffret Patrice Dominguez
		Juan Gisbert, Sr. Ilie Năstase 6–4, 8–6	Adriano Panatta Ion Țiriac
		Virginia Wade Frew McMillan 6–2, 6–3	Ilana Kloss Bernard Mitton
21 May	French Open Paris, France Grand Slam Clay – 128S/64Q/64D/32XD Singles Draw – Doubles Draw – Mixed Doubles Draw	Ilie Năstase 6–3, 6–3, 6–0	Nikola Pilić	Adriano Panatta Tom Gorman	Tom Okker Paolo Bertolucci Jan Kodeš Roger Taylor
		John Newcombe Tom Okker 6–1, 3–6, 6–3, 5–7, 6–4	Jimmy Connors Ilie Năstase
		Françoise Dürr Jean-Claude Barclay 6–1, 6–4	Betty Stöve Patrice Dominguez

June

Week of	Tournament	Champion	Runner-up	Semifinalists	Quarterfinalists
4 June	Italian Open Rome, Italy $101,600 – Clay – 96S/48D	Ilie Năstase 6–1, 6–1, 6–1	Manuel Orantes	Tom Okker Paolo Bertolucci	Stan Smith Péter Szőke Jiří Hřebec Jan Kodeš
		John Newcombe Tom Okker 6–3, 6–2, 6–4	Ross Case Geoff Masters
	Berlin Open Berlin, West Germany Clay – 32S/16D	Hans-Jürgen Pohmann 6–3, 3–6, 6–3, 6–3	Karl Meiler	Jürgen Fassbender Eddie Dibbs	Attila Korpas Ulrich Pinner Harald Elschenbroich Bernard Mignot
		Jürgen Fassbender Hans-Jürgen Pohmann 4–6, 6–4, 6–4	Raúl Ramírez Joaquin Loyo-Mayo
11 June	German Open Hamburg, West Germany Clay – 62S/28D	Eddie Dibbs 6–1, 3–6, 7–6, 6–3	Karl Meiler	Jaime Fillol Jürgen Fassbender	Paul Gerken Harald Elschenbroich Jiří Hřebec Martin Mulligan
		Jürgen Fassbender Hans-Jürgen Pohmann 7–6, 7–6, 7–6	Manuel Orantes Ion Țiriac
	John Player Open Nottingham, Great Britain Grass – 40S/21D	Erik Van Dillen 3–6, 6–1, 6–1	Frew McMillan	Tom Gorman Jimmy Connors	Jaidip Mukherjea Mark Cox Dick Stockton Stephen Warboys
		Tom Gorman Erik Van Dillen 6–4, 6–4	Bob Carmichael Frew McMillan
18 June	Rothmans Championships London, Great Britain Grass – 48S/32D	Ilie Năstase 9–8, 6–3	Roger Taylor	Alex Metreveli Owen Davidson	Ismail El Shafei Jürgen Fassbender John Newcombe Cliff Drysdale
		Tom Okker Marty Riessen 6–4, 7–5	Ray Keldie Raymond Moore
	Rothmans South of England Championships Eastbourne, Great Britain Grass – 32S/16D	Mark Cox 6–2, 2–6, 6–3	Patrice Dominguez	Onny Parun Allan Stone	Paul Gerken Andrés Gimeno Ian Fletcher Graham Stilwell
		Ove Bengtson Jim McManus 6–4, 4–6, 7–5	Manuel Orantes Ion Țiriac
25 June	Wimbledon Championships London, Great Britain Grand Slam Grass – 128S/128Q/64D/56XD Singles Draw – Doubles Draw – Mixed Doubles Draw	Jan Kodeš 6–1, 9–8 (7–5), 6–3	Alex Metreveli	Sandy Mayer Roger Taylor	Jürgen Fassbender Jimmy Connors Björn Borg Vijay Amritraj
		Jimmy Connors Ilie Năstase 3–6, 6–3, 6–4, 8–9 (3–7), 6–1	John Cooper Neale Fraser
		Billie Jean King Owen Davidson 6–3, 6–2	Janet Newberry Raúl Ramírez

July

Week of	Tournament	Champion	Runner-up	Semifinalists	Quarterfinalists
9 July	Swedish Open Båstad, Sweden Clay – 32S/22D	Stan Smith 6–4, 6–1, 7–6	Manuel Orantes	Björn Borg Leif Johansson	Martin Mulligan Jaime Pinto-Bravo Bob Carmichael Antonio Zugarelli
		Nikola Pilić Stan Smith 2–6, 6–4, 6–4	Bob Carmichael Frew McMillan
	Swiss Open Gstaad, Switzerland Clay – 32S	Ilie Năstase 6–4, 6–3, 6–3	Roy Emerson	Patrick Proisy Karl Meiler	Brian Fairlie Allan Stone Sandy Mayer Tom Okker
	Green Shield Welsh Open Newport, Great Britain Grass – 64S/32D	Roger Taylor 9–8, 8–6	Bob Giltinan	John Paish Jeff Simpson	Terry Ryan John Bartlett Byron Bertram Dick Bohrnstedt
		Title shared.	Bertram / Lloyd Giltinan / Keldie
16 July	U.S. Professional Tennis Championships Boston, United States Hard – 32S/16D	Jimmy Connors 6–3, 4–6, 6–4, 3–6, 6–2	Arthur Ashe	Cliff Richey Clark Graebner	Dick Stockton Marty Riessen John Alexander Roscoe Tanner
	Austrian Open Kitzbühel, Austria Clay – 32S/17D	Title shared.	Raúl Ramírez Manuel Orantes	Marcello Lara Ion Țiriac	Vladimir Zednik José Edison Mandarino Barry Phillips-Moore Vladimir Korotkov
		Jim McManus Raúl Ramírez 6–2, 6–2, 6–3	José Edison Mandarino Tito Vázquez
	Dutch Open Hilversum, the Netherlands Clay – 32S/16D	Tom Okker 2–6, 6–4, 6–4, 6–7, 6–3	Andrés Gimeno	Allan Stone Geoff Masters	Wanaro N'Godrella Attila Korpas Ian Fletcher Iván Molina
		Iván Molina Allan Stone 4–6, 7–6, 6–4	Andrés Gimeno Antonio Muñoz
23 July	Washington Star International Washington, United States $75,000 – Clay – 64S/32D	Arthur Ashe 6–4, 6–2	Tom Okker	Jaime Fillol Tom Gorman	Paul Gerken Marty Riessen Nikola Pilić Dick Stockton
		Ross Case Geoff Masters 2–6, 6–4, 6–4	Dick Crealy Andrew Pattison
	Volvo International Bretton Woods, United States Clay – 32S/16D	Vijay Amritraj 7–5, 2–6, 7–5	Jimmy Connors	Ian Fletcher John Alexander	Bob Carmichael Gerald Battrick Tom Edlefsen Rod Laver
		Rod Laver Fred Stolle 7–6, 4–6, 7–5	Bob Carmichael Frew McMillan
30 July	First National Bank Classic Louisville, United States $75,000 – Clay – 64S/32D	Manuel Orantes 3–6, 6–3, 6–4	John Newcombe	Vitas Gerulaitis Guillermo Vilas	Dick Crealy Ross Case Nikola Pilić Antonio Muñoz
		Manuel Orantes Ion Țiriac 0–6, 6–4, 6–3	Clark Graebner John Newcombe
	Buckeye Championships Columbus, United States Clay – 32S/16D	Jimmy Connors 3–6, 6–3, 6–3	Charlie Pasarell	Paul Gerken Haroon Rahim	Pancho Gonzales Andrew Pattison Colin Dibley Brian Gottfried
		Gerald Battrick Graham Stilwell 6–4, 7–6	Colin Dibley Charlie Pasarell

August

Week of	Tournament	Champion	Runner-up	Semifinalists	Quarterfinalists
6 August	Western Championships Cincinnati, United States $50,000 – Clay – 32S/16D	Ilie Năstase 5–7, 6–3, 6–4	Manuel Orantes	Nikola Pilić Jimmy Connors	John Alexander Guillermo Vilas Roscoe Tanner Patrick Proisy
		John Alexander Phil Dent 1–6, 7–6, 7–6	Brian Gottfried Raúl Ramírez
	Tanglewood Open Clemmons, United States Clay – 32S/16D	Jaime Fillol 6–2, 6–4	Gerald Battrick	Jeff Borowiak Vijay Amritraj	Ross Case Brian Fairlie Georges Goven Frew McMillan
		Bob Carmichael Frew McMillan 6–3, 6–4	Brian Fairlie Ismail El Shafei
13 August	U.S. Clay Court Championships Indianapolis, United States $90,000 – Clay – 50S/22D	Manuel Orantes 6–4, 6–1, 6–4	Georges Goven	Cliff Richey Raúl Ramírez	Brian Gottfried Roscoe Tanner Patrick Proisy Paolo Bertolucci
		Bob Carmichael Frew McMillan 6–3, 6–4	Manuel Orantes Ion Țiriac
	Pennsylvania Championships Merion, United States Grass – 64S/32D	Mike Estep 7–5, 3–6, 7–6, 3–6, 7–5	Gene Scott	Vijay Amritraj Herb Fitzgibbon	Brian Teacher Ian Fletcher Anand Amritraj Jean-Baptiste Chanfreau
		Colin Dibley Allan Stone 7–6, 6–3	Jeff Austin Fred McNair
20 August	Canadian Open Toronto, Ontario, Canada $100,000 – Hard – 64S/32D	Tom Okker 6–3, 6–2, 6–1	Manuel Orantes	Cliff Drysdale Iván Molina	Paolo Bertolucci Björn Borg John Newcombe Arthur Ashe
		Rod Laver Ken Rosewall 7–5, 7–6	Owen Davidson John Newcombe
	Eastern Championships South Orange, United States Grass – 32S/16D	Colin Dibley 6–4, 6–7, 6–4	Vijay Amritraj	Pancho Gonzales Clark Graebner	Paul Gerken Dick Stockton Ion Țiriac Onny Parun
		Jimmy Connors Ilie Năstase 6–7, 6–3, 6–2	Pancho Gonzales Tom Gorman
27 August	US Open New York, United States Grand Slam $118,000 – Grass – 128S/62D/32XD Singles Draw – Doubles Draw – Mixed Doubles Draw	John Newcombe 6–4, 1–6, 4–6, 6–2, 6–3	Jan Kodeš	Stan Smith Ken Rosewall	Onny Parun Nikola Pilić Vijay Amritraj Jimmy Connors
		Owen Davidson John Newcombe 7–5, 2–6, 7–5, 7–5	Rod Laver Ken Rosewall
		Billie Jean King Owen Davidson 6–3, 3–6, 7–6	Margaret Court Marty Riessen

September

Week of	Tournament	Champion	Runner-up	Semifinalists	Quarterfinalists
10 September	U.S. Hard Court Championships Aptos, United States Hard – 32S/16D	Jeff Austin 7–6, 6–4	Onny Parun	Haroon Rahim Dick Bohrnstedt	Tom Edlefsen Erik Van Dillen John Lloyd Mike Machette
		Jeff Austin Fred McNair 6–2, 6–1	Raymond Moore Onny Parun
	Seattle Open Seattle, United States Hard – 32S/16D	Tom Okker 7–5, 6–4	John Alexander	Tom Gorman Cliff Richey	Torben Ulrich Mark Cox Brian Gottfried Arthur Ashe
		Tom Gorman Tom Okker 2–6, 6–4, 7–6	Bob Carmichael Frew McMillan
17 September	Pacific Southwest Open Los Angeles, United States Hard – 64S/32D	Jimmy Connors 7–5, 7–6(11–9)	Tom Okker	Raúl Ramírez Ilie Năstase	Stan Smith Charlie Pasarell Ken Rosewall Raymond Moore
		Jan Kodeš Vladimir Zednik 6–2, 6–4	Jimmy Connors Ilie Năstase
24 September	Pacific Coast Championships San Francisco, United States Hard – 32S/16D	Roy Emerson 5–7, 6–1, 6–4	Björn Borg	Raymond Moore Arthur Ashe	Stan Smith Tom Gorman Roscoe Tanner John Alexander
		Roy Emerson Stan Smith 6–2, 6–1	Ove Bengtson Jim McManus
	Tam International Chicago, United States Carpet (i) – 32S/16D	Tom Okker 3–6, 7–6, 6–3	John Newcombe	Ilie Năstase Marty Riessen	Graham Stilwell Gerald Battrick Eddie Dibbs Brian Gottfried
		Owen Davidson John Newcombe 6–7, 7–6, 7–6	Gerald Battrick Graham Stilwell

October

Week of	Tournament	Champion	Runner-up	Semifinalists	Quarterfinalists
1 October	Fort Worth Open Fort Worth, United States Hard – 32S/16D	Eddie Dibbs 7–5, 6–2, 6–4	Brian Gottfried	Jaime Fillol Roscoe Tanner	Phil Dent Harold Solomon Andrew Pattison John Newcombe
		Brian Gottfried Dick Stockton 7–6, 6–4	Owen Davidson John Newcombe
	Quebec Open Quebec, Canada 32S/16D	Jimmy Connors 6–1, 6–1, 6–7, 6–0	Marty Riessen	Mark Cox Kjell Johansson	Onny Parun Raymond Moore Clark Graebner Tenny Svensson
		Bob Carmichael Frew McMillan 6–2, 7–6	Jimmy Connors Marty Riessen
	Osaka Open Osaka, Japan Hard – 32S/16D	Ken Rosewall 6–2, 6–4	Toshiro Sakai	Cliff Drysdale Željko Franulović	Jun Kuki Milan Holeček Paul Kronk Sherwood Stewart
		Jeff Borowiak Tom Gorman 6–4, 7–6	Jun Kamiwazumi Ken Rosewall
8 October	Trofeo Conde de Godó Barcelona, Spain Clay – 58S/32D	Ilie Năstase 2–6, 6–1, 8–6, 6–4	Manuel Orantes	Jan Kodeš Björn Borg	José Higueras Barry Phillips-Moore Andrew Pattison Buster Mottram
		Ilie Năstase Tom Okker 4–6, 6–3, 6–2	Antonio Muñoz Manuel Orantes
	Japan Open Tennis Championships Tokyo, Japan 48S/24D	Ken Rosewall 6–1, 6–4	John Newcombe	Hans-Jürgen Pohmann Cliff Drysdale	Colin Dibley Brian Gottfried Jeff Borowiak Kim Warwick
		Mal Anderson Ken Rosewall 7–5, 7–5	Colin Dibley Allan Stone
15 October	Trofeo Melia Madrid, Spain Clay – 64S/31D	Tom Okker 4–6, 6–3, 6–3, 7–5	Jaime Fillol	Ilie Năstase Buster Mottram	Nikola Pilić José Higueras Rod Laver Pierre Barthès
		Ilie Năstase Tom Okker 6–3, 6–0	Bob Carmichael Frew McMillan
	Indian Open New Delhi, India 32S/16D	Vijay Amritraj 6–4, 5–7, 8–9, 6–3, 11–9	Mal Anderson	Raúl Ramírez Mike Estep	Ian Fletcher Fred Stolle Paul Gerken Jasjit Singh
		Jim McManus Raúl Ramírez 6–2, 6–4	Anand Amritraj Vijay Amritraj
	Philippine Open Manila, the Philippines 32S/16D	Ross Case 6–1, 6–0	Geoff Masters	John Newcombe Colin Dibley	Milan Holeček Jürgen Fassbender Hans-Jürgen Pohmann Allan Stone
		Marcello Lara Sherwood Stewart 4–6, 7–5, 7–6	Jürgen Fassbender Hans-Jürgen Pohmann
22 October	Aryamehr Cup Tehran, Iran Clay – 48S/21D	Raúl Ramírez 6–7, 6–1, 7–5, 6–3	John Newcombe	Željko Franulović Rod Laver	Ilie Năstase Syd Ball Hans-Jürgen Pohmann Bob Giltinan
		Rod Laver John Newcombe 7–6, 6–2	Ross Case Geoff Masters
	Czechoslovakian Championships Prague, Czechoslovakia Clay – 32S/16D	Jiří Hřebec 4–6, 6–1, 3–6, 6–0, 7–5	Jan Kodeš	Jan Písecký Ove Bengtson	Vladimir Zednik František Pala Barry Phillips-Moore Kjell Johansson
		Jan Kodeš Vladimir Zednik 7–6, 7–6	Róbert Machán Balázs Taróczy
29 October	Jean Becker Open Paris, France Hard (i) – 48S/23D	Ilie Năstase 4–6, 6–1, 3–6, 6–0, 6–2	Stan Smith	Tom Okker Karl Meiler	Jean-Baptiste Chanfreau Arthur Ashe Roscoe Tanner Leif Johansson
		Juan Gisbert, Sr. Ilie Năstase 6–4, 6–4	Arthur Ashe Roscoe Tanner
	Indonesia Open Jakarta, Indonesia 32S/16D	John Newcombe 7–6, 7–6, 6–3	Ross Case	Ian Fletcher Jürgen Fassbender	Marcello Lara Ray Keldie Gondo Widjojo Allan Stone
		Mike Estep Ian Fletcher 7–5, 6–4	John Newcombe Allan Stone
	Viceroy Classic Hong Kong, Hong Kong Hard – 32S/16D	Rod Laver 6–3, 3–6, 6–2, 6–2	Charlie Pasarell	Anand Amritraj Fred Stolle	Paul Gerken Mal Anderson Brian Gottfried Raúl Ramírez
		Colin Dibley Rod Laver 6–3, 5–7, 17–15	Paul Gerken Brian Gottfried

November

Week of	Tournament	Champion	Runner-up	Semifinalists	Quarterfinalists
5 November	Stockholm Open Stockholm, Sweden Hard (i) – 48S/24D	Tom Gorman 6–3, 4–6, 7–6	Björn Borg	Tom Okker Jimmy Connors	Stan Smith Arthur Ashe Manuel Orantes Nikola Pilić
		Jimmy Connors Ilie Năstase 6–3, 6–7, 6–2	Bob Carmichael Frew McMillan
	Australian Indoor Championships Sydney, Australia Hard (i) – 32S/16D	Rod Laver 3–6, 7–5, 6–3, 3–6, 6–4	John Newcombe	Phil Dent Ken Rosewall	Geoff Masters Ross Case Sherwood Stewart Raúl Ramírez
		Rod Laver John Newcombe 7–6, 6–2	Mal Anderson Ken Rosewall
12 November	Dewar Cup London, Great Britain Carpet (i) – 32S/16D	Tom Okker 6–3, 6–4	Ilie Năstase	Jimmy Connors Mark Cox	Raymond Moore Patrick Proisy Tom Gorman Ion Țiriac
		Mark Cox Owen Davidson 6–4, 8–6	Gerald Battrick Graham Stilwell
	Benson & Hedges Classic Christchurch, New Zealand 29S/12D	Fred Stolle 7–6, 6–4, 6–1	Brian Gottfried	Sherwood Stewart Fred McNair	Allan Stone Dick Dell Mike Estep Jim McManus
		Anand Amritraj Fred McNair Walkover	Jürgen Fassbender Jeff Simpson
19 November	South African Championships[note 1] Johannesburg, South Africa Hard – 32S/16D/16XD	Jimmy Connors 6–4, 7–6, 6–3	Arthur Ashe	Cliff Drysdale Tom Okker	Byron Bertram Bob Hewitt Jaime Fillol Mark Cox
		Arthur Ashe Tom Okker 6–2, 4–6, 6–2, 6–4	Lew Hoad Bob Maud
		Evonne Goolagong Jürgen Fassbender 6–3, 6–2	Ilana Kloss Bernard Mitton
	South American Championships Buenos Aires, Argentina Clay – 32S/2D	Guillermo Vilas 3–6, 6–7, 6–4, 6–6 RET.	Björn Borg	Iván Molina Eddie Dibbs	Ion Țiriac Željko Franulović Toma Ovici Jaime Pinto-Bravo
		Ricardo Cano Guillermo Vilas 7–6, 6–2	Patricio Cornejo Iván Molina
26 November	Davis Cup Final Cleveland, United States – Carpet	Australia 5–0	United States	Romania  Czechoslovakia

December

Week of	Tournament	Champion	Runner-up	Semifinalists	Quarterfinalists
3 December	Commercial Union Assurance Masters Boston, United States $50,000 – Carpet – 8S Singles Draw – Doubles Draw	Ilie Năstase 6–3, 7–5, 4–6, 6–3	Tom Okker	Jimmy Connors John Newcombe

Grand Prix points system

The tournaments listed above were divided into four groups. Group AA consisted of the Triple Crown – the French Open, the Wimbledon Championships and the US Open – while the other tournaments were divided into Groups A, B and C by prize money and draw size. Points were allocated based on these groups and the finishing position of a player in a tournament. No points were awarded to first round losers and ties were settled by the number of tournaments played. The points allocation is listed below:

ATP Rankings

On 23 August 1973 the Association of Tennis Professionals published its first list of computer rankings, using points averages rather than points totals in their calculations. These are the ATP Rankings of the top twenty singles players in the first list ^[3] and at the end of the 1973 season,^[4] with numbers of ranking points, points averages, numbers of tournaments played, year-end rankings in 1973, highest and lowest positions during the season and number of spots gained or lost from the first rankings to the year-end rankings.

As of 23 August 1973[5] Rk Name Nation 1 Ilie Năstase  Romania 2 Manuel Orantes  Spain 3 Stan Smith  United States 4 Arthur Ashe  United States 5 Rod Laver  Australia 6 Ken Rosewall  Australia 7 John Newcombe  Australia 8 Adriano Panatta  Italy 9 Tom Okker  Netherlands 10 Jimmy Connors  United States 11 Jan Kodeš  Czechoslovakia 12 Paolo Bertolucci  Italy 13 Roger Taylor  United Kingdom 14 Marty Riessen  United States 15 Tom Gorman  United States 16 Nikola Pilić  Yugoslavia 17 Cliff Richey  United States 18 Mark Cox  United Kingdom 19 Roy Emerson  Australia 20 Karl Meiler  West Germany

Year-end rankings (14 December 1973)[6] Rk Name Nation High Low Change 1 Ilie Năstase  Romania 1 = 2 John Newcombe  Australia 2 7 5 3 Jimmy Connors  United States 3 10 7 4 Tom Okker  Netherlands 4 9 5 5 Stan Smith  United States 3 5 2 6 Ken Rosewall  Australia 6 7 = 7 Manuel Orantes  Spain 2 7 5 8 Rod Laver  Australia 5 10 3 9 Jan Kodeš  Czechoslovakia 5 11 2 10 Arthur Ashe  United States 4 10 6 11 Tom Gorman  United States 12 Roy Emerson  Australia 13 Marty Riessen  United States 14 Adriano Panatta  Italy 15 Nikola Pilić  Yugoslavia 16 Roger Taylor  United Kingdom 17 Jaime Fillol  Chile 18 Björn Borg  Sweden 19 Cliff Richey  United States 20 Paolo Bertolucci  Italy

See also

• 1973 World Championship Tennis circuit
• 1973 WTA Tour
• 1973 USLTA Indoor Circuit

Notes

References

External links

• ATP Archive 1973: Commercial Union Grand Prix tournaments
• History Mens Professional Tours

Further reading

• Collins, Bud (2010). The Bud Collins History of Tennis: An Authoritative Encyclopedia and Record Book (2nd ed.). New York: New Chapter Press. ISBN 978-0-942257-70-0.