| 21.7.1973 | 6 h Watkins Glen | 24 | 908/03 | Jöst / Kemp | Joest-Racing | DNA |
| 21.7.1973 | 6 h Watkins Glen | 31 | 911 S | Jennings | Jim Locke | DNQ |
| 21.7.1973 | 6 h Watkins Glen | 51 | 911 S | Hotchkis / Kirby | Johnson-Bozzani Porsche-Audi | DNA |
| 21.7.1973 | 6 h Watkins Glen | 58 | 911 Carrera RSR 2.8 | Rebaque / Rojas | Brumos Porsche-Audi Corp. | DNA |
| 21.7.1973 | 6 h Watkins Glen | 65 | 911 Carrera RSR 2.8 | Loomis / Harrison | Gregg Loomis | DNF |
| 21.7.1973 | 6 h Watkins Glen | 92 | 911 S | Tillson | Holbert's Porsche-Audi | DNQ |
| 21.7.1973 | 6 h Watkins Glen | 97 | 911 | Niederer / Larkin | Hans Niederer | DNQ |
| 22.7.1973 | Can-Am Watkins Glen | 0 | 917/10 TC | Jody Scheckter | Vasek Polak Racing, Inc. | 3rd |
| 22.7.1973 | Can-Am Watkins Glen | 3 | 917/10 | Steve Durst | Vasek Polak Racing, Inc. | 7th |
| 22.7.1973 | Can-Am Watkins Glen | 4 | 917/10 TC | Hans Wiedmer | Hans Wiedmer | DNF |
| 22.7.1973 | Can-Am Watkins Glen | 6 | 917/30 TC | Mark Donohue | Roger Penske Enterprises, Inc. | 1st |
| 22.7.1973 | Can-Am Watkins Glen | 7 | 917/30 TC | Mark Donohue | Penske Racing, Inc. | DNA |
| 22.7.1973 | Can-Am Watkins Glen | 16 | 917/10 TC | George Follmer | Rinzler Motoracing-Royal Crown | DNF |
| 22.7.1973 | Can-Am Watkins Glen | 23 | 917/10 TC | Charlie Kemp | Rinzler Motoracing-Royal Crown Cola | 4th |
| 22.7.1973 | Can-Am Watkins Glen | 24 | 908/03 | Reinhold Jöst | Jost Racing | DNA |
| 22.7.1973 | Can-Am Watkins Glen | 58 | 911 Carrera RSR | Peter Gregg | Brumos Racing | 9th |
| 22.7.1973 | Can-Am Watkins Glen | 59 | 917/10 TC | Hurley Haywood | Brumos Porsche-Audi Corp. | DNF |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 214 | 911 Carrera RS | Klaus Herig | Vereinigung Berliner e.V. Automobilsportler | 9th |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 215 | 911 Carrera RS | Edy Welti | Formel Rennsport Club | 5th |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 216 | 911 Carrera RS | Edi Kofel | Mascotte Racing Team | DNA |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 217 | 911 Carrera RS | Sidney Charpilloz | Ecurie Biennoise | 4th |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 218 | 911 Carrera RS | Peter Ditzler | Blank Racing Team | 6th |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 220 | 911 Carrera RS | Friedrich Straumann | Ecurie Basilisk | 1st |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 221 | 911 Carrera RS | Jean von Kaenel | Formel Rennsport Club | 8th |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 222 | 911 Carrera RS | Ernst Brühweiler | Ecurie Basilisk | 11th |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 223 | 911 Carrera RS | Martin Brühweiler | Martin Brühweiler | 12th |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 224 | 911 Carrera RS | Peter Zbinden | Scuderia Basilea | 2nd |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 225 | 911 Carrera RS | Theo Hofer | Lista Racing Team | 3rd |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 226 | 911 Carrera RS | André Stuckelberger | André Stuckelberger | 13th |
| 22.7.1973 | SM Hockenheim [T2.0/GT2.0] | 323 | 911 S | Jürgen Lässig | Jürgen Lässig | 2nd |
| 22.7.1973 | SM Hockenheim [T2.0/GT2.0] | 324 | 911 | Horst Godel | Braun sixtant racing team | DNA |
| 22.7.1973 | SM Hockenheim [T2.0/GT2.0] | 325 | 911 | Peter Ehlert | Braun sixtant racing team | DNF |
| 22.7.1973 | SM Hockenheim [T2.0/GT2.0] | 326 | 914/6 | Albrecht Schütz | Autohaus Max Moritz GmbH VW-Porsche Sportwagenzentrum | 1st |
| 22.7.1973 | SM Hockenheim [T2.0/GT2.0] | 327 | 914/6 | Hans Stähli | Formel-Rennsport-Club | 4th |
| 22.7.1973 | SM Hockenheim [T2.0/GT2.0] | 328 | 914/6 | Peter Karl Nowak | Braun sixtant racing team | 5th |
| 22.7.1973 | SM Hockenheim [T2.0/GT2.0] | 329 | 914/6 | "Ronald Knudel" | Mannheim-Heidelbert Sports Touring Club | DNF |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 334 | 911 Carrera RSR 2.8 | Richard Leder | Richard Leder | ?th |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 336 | 911 S | Max Müller | Formel-Rennsportclub | ?th |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 337 | 911 Carrera | Kurt Peter | Formel-Rennsportclub | ?th |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 338 | 911 Carrera RSR 2.8 | Karl Foitek | Karl Foitek | ?th |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 339 | 911 Carrera RSR 2.8 | Peter Bernhard | Peter Bernhard | DNF |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 340 | 911 Carrera RSR 2.8 | Fredy Lienhard | Lista Racing-Team | ?th |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 343 | 911 S | Dieter Götting | Autohaus Kaufmann oHG | ?th |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 344 | 911 Carrera RSR 2.8 | Eugen Kiemele | Eugen Kiemele | ?th |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 345 | 911 S | Walter Vetter | Motorsportclub Stuttgart e.V. | ?th |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 346 | 911 Carrera RS | Josef Brambring | Josef Brambring | ?th |
| 22.7.1973 | SM Hockenheim [S+1.6/GT+2.0] | 347 | 911 S | Horst Kloft | Horst Kloft | DNF |
| 28.7.1973 | Trans-Am Road America | 6 | 911 | Eddie Wachs | Palatine Automotive | 7th |
| 28.7.1973 | Trans-Am Road America | 8 | 911 S | Causey / Parish | Hitzelburger Supply Porsche | 10th |
| 28.7.1973 | Trans-Am Road America | 9 | 911 Carrera RSR 2.8 | Bob Hagestad | Bob Hagestad | 23rd |
| 28.7.1973 | Trans-Am Road America | 14 | 911 Carrera RSR | Al Holbert | Holbert's Porsche Audi, Inc. | 3rd |
| 28.7.1973 | Trans-Am Road America | 42 | 911 Carrera RS | John O'Steen | Ecurie Escargot | 21st |
| 28.7.1973 | Trans-Am Road America | 59 | 911 Carrera RSR 2.8 | Peter Gregg | Brumos Porsche Audi Corp. | 29th |
| 28.7.1973 | Trans-Am Road America | 61 | 911 | Sieg Glage | Sieg Glage | DNS |
| 28.7.1973 | Trans-Am Road America | 70 | 911 Carrera RSR | Milt Minter | Bob Harmon Racing | 5th |
| 28.7.1973 | Trans-Am Road America | 74 | 911 S | Ludwig Heimrath | Heimrath Racing | 18th |
| 28.7.1973 | Trans-Am Road America | 81 | 911 Carrera RSR 2.8 | Grey Egerton | Pharr West Racing | DNA |
| 28.7.1973 | Trans-Am Road America | 86 | 914/6 | Parish / Hulen | Donald L. Parish | 25th |
| 28.7.1973 | Trans-Am Road America | 90 | 911 ST | Marc Dancose | Marc Dancose | 11th |
| 28.7.1973 | Trans-Am Road America | | 911 Carrera RS | Elliot Forbes-Robinson | Pharr Yarks | 4th |
| 29.7.1973 | NTK Zandvoort | 81 | 911 Carrera RSR | Nico Chiotakis | Team 4711 Sir Irish Moss | 2nd |
| 5.8.1973 | DRM Nürburgring GP | 5 | 911 Carrera RSR 2.8 | Günter Steckkönig | Manfred Weißmann | 3rd |
| 5.8.1973 | Euro GT Thruxton | 9 | 911 T | Horst Klauke | | DNF |
| 5.8.1973 | DRM Nürburgring GP | 15 | 911 Carrera RSR 2.8 | Peter Bernhard | FRC | DNF |
| 5.8.1973 | Euro GT Thruxton | 15 | 911 Carrera RSR 2.8 | Claude Ballot-Léna | Sonauto | 1st |
| 5.8.1973 | DRM Nürburgring GP | 16 | 911 Carrera RSR 2.8 | Eberhard Sindel | Rallyegemeinschaft Ulm | DNF |
| 5.8.1973 | DRM Nürburgring GP | 19 | 911 Carrera RSR | Hans-Peter Ziegler | Hans-Peter Ziegler | 13th |
| 5.8.1973 | DRM Nürburgring GP | 21 | 911 Carrera RS | Karl-Josef Römer | Karl-Josef Römer | 19th |
| 5.8.1973 | DRM Nürburgring GP | 22 | 911 Carrera RS | Eckard Babendererde | Eckard Babendererde | DNA |
| 5.8.1973 | DRM Nürburgring GP | 23 | 911 S | Horst Kloft | | DNF |
| 5.8.1973 | Euro GT Thruxton | 29 | 911 Carrera RSR 2.8 | Claude Haldi | Porsche Club Romand | 2nd |
| 5.8.1973 | Euro GT Thruxton | 33 | 911 Carrera RSR | Clemens Schickentanz | Porsche Kremer Racing | 3rd |
| 5.8.1973 | Euro GT Thruxton | 35 | 911 Carrera RSR 2.8 | Charles Geeraerts | Royal Air Maroc | 9th |
| 5.8.1973 | Euro GT Thruxton | 38 | 911 Carrera RSR | Paul Keller | Porsche Kremer Racing | 4th |
| 5.8.1973 | DRM Nürburgring GP | 39 | 914/6 | Eckhard Schimpf | Jägermeister-Racing-Team | 23rd |
| 5.8.1973 | DRM Nürburgring GP | 40 | 914/6 | Hans Stähli | Formel Rennsport Club | 29th |
| 5.8.1973 | DRM Nürburgring GP | 41 | 911 S | Hans Hargarten | Warny Racing Team | DNA |
| 5.8.1973 | DRM Nürburgring GP | 43 | 911 S | Walter aus der Au | Mascotte-Racing-Team | 21st |
| 5.8.1973 | DRM Nürburgring GP | 47 | 914/6 | Werner Christmann | Hubert Engbert Ölde | DNS |
| 5.8.1973 | DRM Nürburgring GP | 58 | 911 | Peter Kuhlmann | Peter Kuhlmann | DNA |
| 5.8.1973 | SCCA Riverside Copa Turismo | | 911 Carrera RSR | Diego Febles | | 1st |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RSR | Bernard Chenevière | Porsche Club Romand | 6th |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RSR | Georg Loos | Gelo Racing Team | raced |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RSR | Kurt Simonsen | | 5th |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RSR 2.8 | Eugen Kiemele | Eugen Kiemele | 8th |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RS | William Vollery | | 7th |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RSR | Roland Larsson | | DNS |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RSR | Helmut Henzler | | DNS |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RSR | Bengt Ekberg | Team Kubero | raced |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RSR | Martin Birrane | | raced |
| 5.8.1973 | Euro GT Thruxton | | 911 Carrera RSR 2.8 | Ennio Bonomelli | Ennio Bonomelli | raced |
| 12.8.1973 | Can-Am Mid-Ohio | 0 | 917/10 TC | Jody Scheckter | Vasek Polak | DNF |
| 12.8.1973 | Can-Am Mid-Ohio | 3 | 917/10 | Steve Durst | Vasek Polak | 10th |
| 12.8.1973 | Can-Am Mid-Ohio | 4 | 917/10 TC | Hans Wiedmer | Vasek Polak | DNF |
| 12.8.1973 | Can-Am Mid-Ohio | 5 | 917/10 TC | Willi Kauhsen | Willi Kauhsen Racing | DNF |
| 12.8.1973 | Can-Am Mid-Ohio | 6 | 917/30 TC | Mark Donohue | Penske Racing/Sunoco | 1st |
| 12.8.1973 | Can-Am Mid-Ohio | 16 | 917/10 TC | George Follmer | Rinzler Motoracing/R-C Cola | 2nd |
| 12.8.1973 | Karlskoga [T+1.3/GT3.0] | 21 | 911 | Kenneth Leim | Team Blå Racing | DNA |
| 12.8.1973 | Can-Am Mid-Ohio | 23 | 917/10 TC | Charlie Kemp | Rinzler Motoracing/R-C Cola | DNS |
| 12.8.1973 | Can-Am Mid-Ohio | 59 | 917/10 TC | Hurley Haywood | Brumos Porsche/Go Navy | 3rd |