| 15.7.1973 | 6 h Mid-Ohio | 00 | 911 ST | Brian Goellnicht | Don Lindley | 50th |
| 15.7.1973 | Interserie Hockenheim | 1 | 917/10 TC | Leo Kinnunen | Motorsport-Club Stuttgart e. V. Racing Team AAW | 9th |
| 15.7.1973 | Interserie Hockenheim | 2 | 917/10 TC | Willi Kauhsen | Willi Kauhsen Racing Team | 6th |
| 15.7.1973 | Interserie Hockenheim | 5 | 917/10 | Ernst Kraus | Boeri-Helmets-Racing-Team | 3rd |
| 15.7.1973 | Interserie Hockenheim | 6 | 917/10 TC | Georg Loos | Gelo Racing Team | 2nd |
| 15.7.1973 | Interserie Hockenheim | 7 | 917/30 TC | Vic Elford | Motorsport-Club Stuttgart e. V. | 1st |
| 15.7.1973 | Interserie Hockenheim | 9 | 908/03 | Reinhold Jöst | Joest-Racing | 4th |
| 15.7.1973 | Trans-Am Sanair | 14 | 911 Carrera RSR | Al Holbert | Holbert's Porsche-Audi | 4th |
| 15.7.1973 | Interserie Hockenheim | 23 | 917 Spyder | Jürgen Barth | Motorsport-Club Stuttgart e. V. | 5th |
| 15.7.1973 | Sweden Falkenberg | 26 | | Kenneth Leim | Team Blå Racing | DNA |
| 15.7.1973 | Sweden Falkenberg | 34 | | Hans Wallberg | | DNA |
| 15.7.1973 | Interserie Hockenheim | 44 | 917 Spyder | Albert Pfuhl | Auto-Fox-Racing | 8th |
| 15.7.1973 | Interserie Hockenheim | 47 | 917 Spyder | Lasse Sirviö | Motorsport-Club Stuttgart e. V. | 7th |
| 15.7.1973 | Trans-Am Sanair | 59 | 911 Carrera RSR 2.8 | Peter Gregg | Brumos Porsche-Audi Corp. | 6th |
| 15.7.1973 | Trans-Am Sanair | 70 | 911 Carrera RSR | Milt Minter | Bob Harmon Racing | 23rd |
| 15.7.1973 | Trans-Am Sanair | 74? | 911 S | Ludwig Heimrath | Heimrath Racing | 19th |
| 15.7.1973 | Trans-Am Sanair | 90 | 911 ST | Dancose / Bienvenue | Marc Dancose | 24th |
| 15.7.1973 | DRM Diepholz | 104 | 911 Carrera RSR | Clemens Schickentanz | Oldenkott Pipes and Tobacco Racing | 3rd |
| 15.7.1973 | DRM Diepholz | 111 | 911 Carrera RSR | Rolf Stommelen | Porsche Kremer-Racing Team | 1st |
| 15.7.1973 | Diepholz [GT2.0/T1.6] | 139 | 914/6 | Hans Christian Jürgensen | Hans Christian Jürgensen | DNA |
| 15.7.1973 | Diepholz [GT2.0/T1.6] | 242 | 914/6 | Hubert Schlieckmann | Hubert Schlieckmann | DNA |
| 15.7.1973 | Diepholz [GT2.0/T1.6] | 243 | 914/6 | Hermann Schlüter | Hans-Hermann Schlüter | DNA |
| 15.7.1973 | Magny-Cours | | 910 | Crubile | | 3rd |
| 15.7.1973 | DRM Diepholz | | 911 S | Horst Kloft | Horst Kloft | 8th |
| 15.7.1973 | DRM Diepholz | | 911 Carrera RSR | Josef Brambring | Porsche-Kremer-Racing Team | DNS |
| 15.7.1973 | 6 h Mid-Ohio | | 911 S | | | unused |
| 15.7.1973 | Trans-Am Sanair | | 911 Carrera RSR | Mike Downs | Silverstone Ent. | 5th |
| 15.7.1973 | DRM Diepholz | | 911 Carrera RSR 2.8 | Richard Leder | Richard Leder | 14th |
| 15.7.1973 | DRM Diepholz | | 911 Carrera RSR | Kurt Simonsen | | 9th |
| 15.7.1973 | DRM Diepholz | | 911 | Jürgen Krzikalla | Scuderia Avus | 11th |
| 15.7.1973 | DRM Diepholz | | 911 Carrera RSR 2.8 | Claude Haldi | | 6th |
| 15.7.1973 | DRM Diepholz | | 911 Carrera RSR 2.8 | Günter Steckkönig | M. Weißmann Vorhangschienen | 5th |
| 15.7.1973 | DRM Diepholz | | 914/6 | Werner Christmann | Werner Christmann | 5th |
| 21.7.1973 | 6 h Watkins Glen | 6 | 911 Carrera RSR 2.8 | Donohue / Follmer | Roger Penske Enterprises | 6th |
| 21.7.1973 | 6 h Watkins Glen | 14 | 911 Carrera RSR | Holbert / McComb | Holbert's Porsche-Audi | DNF |
| 21.7.1973 | 6 h Watkins Glen | 16 | 911 Carrera RSR 2.8 | Keyser / Minter | Toad Hall Motor Racing | 8th |
| 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 | 43 | 911 Carrera RS | Helmick / O'Steen | Ecurie Escargot | 12th |
| 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 | 59 | 911 Carrera RSR | Gregg / Haywood | Brumos Porsche-Audi Corp. | 7th |
| 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 | 70 | 911 Carrera RSR | Minter / Harmon | Bob Harmon Racing | DNF |
| 21.7.1973 | 6 h Watkins Glen | 76 | 911 Carrera RSR | Downs / Kelly | Silverstone Enterprises | DNS |
| 21.7.1973 | 6 h Watkins Glen | 81 | 911 Carrera RSR 2.8 | Egerton / Forbes-Robinson | Pharr West Racing | 11th |
| 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 | 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 |