| 5 | | 5th Annual Black Hawk Metro Snow Disc Open | C | 04-Feb-1990 | $8 |
| 10 | 70.00 | Oskaloosa Open 1990 | C | 08-Apr-1990 | |
| 26 | | Kansas City Wide Open | C | 21-Apr to 22-Apr-1990 | |
| 28 | | New Lenox Open | C | 28-Apr to 29-Apr-1990 | |
| 4 | 90.00 | 4th Annual Bud-Light John Kramer Open | C | 20-May-1990 | $36 |
| 25 | | 4th Annual Minnesota Majestic | A | 26-May to 27-May-1990 | |
| 11 | 40.00 | 1990 My Waterloo Days | C | 09-Jun to 10-Jun-1990 | |
| 2 | | Spring Fever Fling Disc Golf Classic | C | 16-Jun-1990 | $38 |
| 14 | | Coors Sinnissippi Open | C | 24-Jun-1990 | |
| 24 | 75.00 | 3 Rivers Open | C | 07-Jul to 08-Jul-1990 | |
| 46 | | Mid-America Open | A | 14-Jul to 15-Jul-1990 | |
| 8 | | 2nd Annual Dayton Classic | C | 29-Jul-1990 | |
| 4 | | Highland Park Open | C | 11-Aug to 12-Aug-1990 | $69 |
| 9 | | Edgewood Labor Day Classic | C | 01-Sep to 02-Sep-1990 | |
| 8 | | Black Hawk Metro Disc Golf Open | C | 16-Sep-1990 | |
| 3 | | Des Moines Open | C | 23-Sep-1990 | $47 |
| 5 | | Ottumwa Fall Classic | C | 30-Sep-1990 | |
| 155 | | 1990 PDGA Professional Disc Golf World Championships | M | 09-Oct to 13-Oct-1990 | |
| 4 | | Cool Weather Classic | C | 21-Oct-1990 | $28 |
