1973 - Watkins Glen 6 Hours

21 July 1973 - Watkins Glen, USA

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

GT - 1st, 3rd

No.	Car	#	Class	Drivers	Entrant	Pos	Class	Grid	Notes
6	Porsche 911 Carrera RSR	911 360 0588 R6	S3.0	Mark Donohue (USA)/George Follmer (USA)	Roger Penske Enterprises (USA)	6th	6th	10th	178 laps
59	Porsche 911 Carrera RSR	911 360 0686 R7	S3.0	Peter Gregg (USA)/Hurley Haywood (USA)	Brumos Porsche-Audi Corp. (USA)	7th	7th	11th	168 laps
16	Porsche 911 Carrera RSR	911 360 0755	GT	Michael Keyser (USA)/Milt Minter (USA)	Toad Hall Motor Racing (USA)	8th	1st	15th	168 laps
81	Porsche 911 Carrera RSR	911 360 0756	GT	Grey Egerton (USA)/Elliott Forbes-Robinson (USA)	Pharr West Racing (USA)	11th	3rd	20th	164 laps
43	Porsche 911 Carrera RSR	911 360 0915	GT	Dave Helmick (USA)/John O'Steen (USA)	Ecurie Escargot (USA)	12th	4th	24th	164 laps
14	Porsche 911 Carrera RSR	911 360 0307 R3	GT	Al Holbert (USA)/John McComb (USA)	Holbert's Porsche-Audi (USA)	DNF		19th	140 laps - Suspension
70	Porsche 911 Carrera RSR	911 360 0601	GT	Milt Minter (USA)/Bob Harmon (USA)/Bruce Jennings (USA)	Bob Harmon Racing (USA)	DNF		18th	83 laps - Brakes
65	Porsche 911 Carrera RSR	911 360 0701	GT	Gregg Loomis (USA)/Pete Harrison (USA)	Gregg Loomis (USA)	DNF		29th	17 laps - Gearbox