Philadelphia, PA
John F Kennedy Stadium
- September 28, 1973
All-Time Wins
450 Class
| Rider | Hometown | Wins |
|---|---|---|
| Pierre Karsmakers |  The Netherlands | 1 |
250 Class
| Rider | Hometown | Wins |
|---|
WMX
| Rider | Hometown | Wins |
|---|
| Rider | Hometown | Wins |
|---|---|---|
| Pierre Karsmakers | The Netherlands | 1 |
| Rider | Hometown | Wins |
|---|
| Rider | Hometown | Wins |
|---|