4 February 1973 - Daytona 24 Hours - World Championship for Makes

Peter Gregg and Hurley Haywood win in the race debut of the 911 Carrera RSR

24 March 1973 - Sebring 12 Hours - Non Championship Race

Peter Gregg, Hurley Haywood and Dave Helmick win in Porsche 911 Carrera RSR

25 March 1973 - Vallelunga 6 Hours - World Championship for Makes

Reinhold Joest & Mario Casoni 5th in a Porsche 908/03, 18 laps behind the winning Matra 670B driven by Gérard Larrousse & Henri Pescarolo

1 April 1973 - Nürburgring 300 Km - European Championship for Grand Touring Cars

Claude Ballot-Léna wins in a Porsche 911 Carrera RSR

1 April 1973 - Interserie Nürburgring - Interserie

Willi Kauhsen wins in a Porsche 917/10 TC

15 April 1973 - Dijon 1000 km - World Championship for Makes

Claude Haldi & Juan Fernandez 8th in a Porsche 908/03, 41 laps behind the winning Matra MS670B driven by Henri Pescarolo & Gérard Larrousse

25 April 1973 - Monza 1000 km - World Championship for Makes

Clemens Schickentanz & Erwin Kremer 8th in a Porsche 911 Carrera RSR, 32 laps behind the winning Ferrari 312 PB driven by Jacky Ickx and Brian Redman

29 April 1973 - DRM Nürburgring Eifelrennen - DRM - Deutsche Rennsport Meisterschaft

Clemens Schickentanz 2nd in s Porsche 911 Carrera RSR

6 May 1973 - Spa 1000 km - World Championship for Makes

Gijs van Lennep & Herbert Müller fifth in a Porsche 911 Carrera RSR

13 May 1973 - Targa Florio - World Championship for Makes

The final official Targa Florio won by Herbert Müller and Gijs van Lennep in a Porsche 911 Carrera RSR

13 May 1973 - Euro GT GP Paris - European Championship for Grand Touring Cars

Claude Ballot-Léna wins in a Porsche 911 Carrera RSR

27 May 1973 - Nürburgring 1000 km - World Championship for Makes

Claude Haldi & Bernard Cheneviére fourth in a Porsche 908/03

2 June 1973 - European GT Championship Imola - European Championship for Grand Touring Cars

Clemens Schickentanz second in a Porsche 911 Carrera RSR

10 June 1973 - Le Mans 24 Hours - World Championship for Makes

The 1973 24 Hours of Le Mans was the 41st Grand Prix of Endurance and took place on 9 and 10 June 1973.

10 June 1973 - Can-Am Mosport - Can-Am - Canadian-American Challenge Cup

Charlie Kemp wins in a Porsche 917/10

24 June 1973 - Euro GT Nivelles - European Championship for Grand Touring Cars

Clemens Schickentanz wins in a Porsche 911 Carrera RSR

24 June 1973 - Zeltweg 1000 km - World Championship for Makes

Gijs van Lennep & Herbert Müller 8th in Porsche Carrera RSR 21 laps behind the winning Matra MS670B driven by Henri Pescarolo and Gérard Larrousse

24 June 1973 - Interserie Norisring - Interserie

Leo Kinnunen wins in a 917/10

1 July 1973 - DRM Mainz-Finthen - DRM - Deutsche Rennsport Meisterschaft

Clemens Schickentanz second in a Porsche 911 Carrera RSR

8 July 1973 - European GT Championship Estoril - European Championship for Grand Touring Cars

Paul Keller wins in a Porsche 911 Carrera RSR

8 July 1973 - Can-Am Road Atlanta - Can-Am - Canadian-American Challenge Cup

George Follmer wins in a Porsche 917/10

15 July 1973 - DRM Diepholz - DRM - Deutsche Rennsport Meisterschaft

Rolf Stommelen wins in a Porsche 911 Carrera RSR

21 July 1973 - Watkins Glen 6 Hours - World Championship for Makes

Mark Donohue & George Follmer 6th in a Porsche 911 Carrera RSR, 21 laps behind the winning Matra MS670B driven by Gérard Larrousse & Henri Pescarolo

22 July 1973 - Can-Am Watkins Glen - Can-Am - Canadian-American Challenge Cup

Mark Donohue wins in a Porsche 917/30

5 August 1973 - Euro GT Thruxton - European Championship for Grand Touring Cars

Claude Ballot-Léna wins in a Porsche 911 Carrera RSR

12 August 1973 - Can-Am Mid-Ohio - Can-Am - Canadian-American Challenge Cup

Mark Donohue wins in a Porsche 917/30

19 August 1973 - DRM Kassel-Calden - DRM - Deutsche Rennsport Meisterschaft

Günther Steckkönig finishes one lap down in a Porsche 911 Carrera RSR

19 August 1973 - Interserie Misano - Interserie

Leo Kinnunen wins in a 917/10

26 August 1973 - DRM Hockenheim Preis der Nationen - DRM - Deutsche Rennsport Meisterschaft

Clemens Schickentanz second in a Porsche 911 Carrera RSR

26 August 1973 - Can-Am Road America - Can-Am - Canadian-American Challenge Cup

Mark Donohue wins in a Porsche 917/30

2 September 1973 - Monza 6 Hours - European Championship for Grand Touring Cars

Clemens Schickentanz, Erwin Kremer & Paul Keller win in a Porsche 911 Carrera RSR

9 September 1973 - DRM Norisring - DRM - Deutsche Rennsport Meisterschaft

Clemens Schickentanz second in a Porsche 911 Carrera RSR

16 September 1973 - Can-Am Edmonton - Can-Am - Canadian-American Challenge Cup

Mark Donohue wins in a Porsche 917/30

7 October 1973 - DRM Sauerland Hill Climb - DRM - Deutsche Rennsport Meisterschaft

Reinhardt Stenzel wins in a Porsche 911 Carrera RSR

14 October 1973 - Can-Am Laguna Seca - Can-Am - Canadian-American Challenge Cup

Mark Donohue wins in a Porsche 917/30

27 October 1973 - IROC Riverside 1 - IROC - International Race of Champions

Mark Donohue wins in a Porsche 911 Carrera RSR

27 October 1973 - IROC Riverside 2 - IROC - International Race of Champions

George Follmer wins in a Porsche 911 Carrera RSR

28 October 1973 - IROC Riverside 3 - IROC - International Race of Champions

Mark Donohue wins in a Porsche 911 Carrera RSR

29 October 1973 - Can-Am Riverside - Can-Am - Canadian-American Challenge Cup

Mark Donohue wins in a Porsche 917/30

3 November 1973 - Kyalami 9 Hours - South African Springbok Trophy Series

Reinhold Jöst & Herbert Müller win in a Porsche 908/03