| 27 | | Dogwood Crosstown Classic | C | 24-Mar to 25-Mar-1990 | |
| 19 | | Pittsburgh Flying Disc Open | C | 21-Apr to 22-Apr-1990 | |
| 12 | | Duck Golf | C | 12-May to 13-May-1990 | |
| 18 | | Brandywine Creek Classic | C | 19-May-1990 | |
| 18 | | Lums Treezz Open | C | 20-May-1990 | |
| 12 | | Baltimore Open | C | 10-Jun-1990 | |
| 7 | | Dead Dog-Less Woods Open | C | 16-Jun-1990 | |
| 4 | | Bayville Disc Golf 1990 Open | C | 23-Jun-1990 | $32 |
| 18 | | Calvert Road Open | C | 07-Jul-1990 | |
| 38 | | Laurel Springs Open | A | 28-Jul to 29-Jul-1990 | |
| 25 | | Maryland State Championships | C | 18-Aug to 19-Aug-1990 | |
| 15 | | Shoot Out at French Creek | C | 01-Sep to 02-Sep-1990 | |
| 5 | | Beaver Open | C | 15-Sep-1990 | $50 |
| 5 | | PA Flying Disc Championships | C | 22-Sep-1990 | $60 |
| 15 | | North Carolina State Championships | C | 29-Sep to 30-Sep-1990 | |
| 151 | | 1990 PDGA Professional Disc Golf World Championships | M | 09-Oct to 13-Oct-1990 | |
| 12 | | 99 Holes of Golf | C | 20-Oct to 21-Oct-1990 | |
| 33 | | Brandywine Windjammer | C | 03-Nov to 04-Nov-1990 | |
