It would be the first sprint race of the 1973 season. The Porsche Carrera, which had been introduced early in the season, was to face a new challenge, in the name of the Horst Kwech entered Ford Capri. The race promised a lot. Forty six cars were entered, with a huge American iron entry list. John Greenwood had entered his purpose built Chevrolet Corvette, which was the crowd's favorite. Jim Marshall Robbins, a Trans Am regular, was here with his own car. Leldon Blackwell entered their usual orange and yellow car, which was in the hands of Wilbur Pickett. Ford Smith, a DC9 pilot, brought his own car, as did Babe Headley, in his familiar Babe's Garage of Paoli green car. Phil Currin had an older car, but he ran it strong. Rick Mancuso, Scott Chapman and William McVey were the last Corvette entrants. Five Porsche Carreras were entered, but two cars were really strong entries. Peter Gregg had his Brumos car, a well prepped 2,8L machine. Michael Keyser was at the wheel of the Toad Hall car, and he was aiming at the win. He was still in the lead for the Championship, but Peter Gregg was now charging hard. George Dyer had a Porsche Carrera, too, as Pete Harrison and Harry Bytzek, but they were not running for the win. A bunch of Chevrolet Camaros was to be seen, and Warren Agor was one of the guys to be watched upon. His big block engine was very powerful, and he just needed to get a little bit more lucky. The same could be told about Gene Felton, whose first generation car was powered by the same type of engine. Always aggressive in his driving style, he would never miss an occasion to grab the win, as he did at Daytona in July. Maurice Carter, a Trans Am and IMSA regular, was as steady as he was fast.
Gene Harrington and Paul Nichter were some valuable runner-ups, with Kemper Miller not so far. Tom Nehl was another fast driver, who could do some great things. The other drivers were simply outpaced.
Another great contender was Horst Kwech, whose AUSCA Ford Capri RS3100 was beautifully prepared and driven. A string of bad luck has plagued the Aussie but he was always amongst the best. Max Sebba had a very unusual De Tomaso Mangusta. Unfortunately, the car did not appear to be up to the task. It was looking gorgous, however. Roger Pierce, who shared his time between a Chevrolet Corvette and a Ford Mustang, had opted for the Detroit iron. Tommy Johnson had an ex-Bud Moore car, he was aiming at a top ten finish in such a field. Dave Mroz and Sam Miller had not such hopes in this race. The GTU class was finally quite different, with a Porsche domination to be foreseen. The question was : whose 911 would take the chequered in first position? Jim Cook would be driving Bob Bergstrom's car. He would have to fight against another Canadian driver, in the name of Ludwig Heimrath. George Dickinson and Bob Beasley were consistent drivers and could do well. Another bunch of drivers would try to grab the lower class laurels : Michael Sherwin, Adrian Gang, Edwin Taylor and Don Lindley were regular entrants. John Belperche and Jim Lynch rounded off the German contingent. The competition would probably come from another German machine, but it was a 914/6, driven by Dave White. He would compensate the lack in power by a very good driving style. Bob Lapp was entered in a Datsun 240Z, which was not very powerful. Dave Nicholas, in a BMW 2002, would try to do his best in a strong GTU field. The practice session would be dominated by John Greenwood, in his powerful Chevrolet Corvette, who was more than one second faster than his closest competitor. Very impressive, indeed, as Jim Robbins was equally in a Chevrolet Corvette. Peter Gregg was third, leading Gene Felton, Horst Kwech and Michael Keyser. The GTU class was led by Jim Cook who was just ahead of Ludwig Heimrath on the grid, placing sixteenth on the forty six car grid. No less than sixteen were gridded with no time, and would take the green flag at the back of the starting field. Once again, it would be another battle for fuel, as the American cars probably had speed, but they would have to pit twice, while the Porsche Carreras could go on a single load of fuel. The race was set, and when the green flag fell, it looked like it would not be Peter Gregg's day, as he missed a gear at the start.
At the start of the race, John Greenwood was out of sight, followed by Gene Felton and Peter Gregg, who would drop to fifteenth place at the end of lap one. He would then have a fantastic race and win by one lap over Horst Kwech.
At the end of lap one, he was only in fifteenth position. John Greenwood, as everyone would expect, was in the lead, and running great. The same could not be told from Phil Currin, in his Chevrolet Corvette, who retired on the very first lap. John Greenwood was just ahead of Gene Harrington, who had a great run, and Horst Kwech, in his Ford Capri. Unfortunately for John Greenwood, the dream would not come true as he ducked into the pits on lap eighteen, with an engine gone. Gene Harrington would take over the lead, but he was closely followed by Horst Kwech, and Peter Gregg, who had done a hell of a job to grab a third place. Gene Harrington then pitted for fuel, leaving his position to Horst Kwech, who was not supposed to pit for fuel so early. But he pitted, however, because of a damaged suspension caused by an off-course.
The race, then seemed to have lost some of its attractiveness. When he came back to the track, Gene Harrington was no more a threat to Peter Gregg, as he began a series of pit stops, losing ground on the leader of the race. The track was gettihg slippery and a very spectacular accident was to happen on lap forty three, when Scott Chapman, who drove a Chevrolet Corvette, was sent up the embankment and slammed the guardrail. He was left groggy but was not seriously hurt. Michael Keyser was running third while Horst Kwech, despite a car that could not run as fast as it would, maintained his position until the end of the race. Once again, Peter Gregg, driving his Brumos Racing Porsche Carrera, was the class of the field. He took the win at 153,739km/h, and his closest opponent was one lap down. He was not leading the IMSA Camel GT series, but two races were left, which he would win later. Peter perfect still was the best! The GTU class was won by Ludwig Heimrath, who finished tenth overall, beating Jim Cook and Bob Beasley in the process. The next race was to be held at Indianapolis Raceway Park, for the first time ever.