| 1 | | 20th Annual Wintertime Open | B | 21-Feb to 22-Feb-1998 | $355 |
| 4 | | 1998 Caldecott Open | B | 28-Feb to 01-Mar-1998 | $60 |
| 1 | 78.00 | St. Patrick's Classic | B | 28-Mar to 29-Mar-1998 | $250 |
| 7 | | Motherlode 98 | B | 18-Apr to 19-Apr-1998 | $80 |
| 5 | | Browns-N-Bows | B | 21-Apr to 22-Apr-1998 | $77 |
| 15 | | Santa Cruz Masters Cup | A | 24-Apr to 26-Apr-1998 | $100 |
| 7 | | Bob West Memorial | B | 23-May to 24-May-1998 | $50 |
| 8 | | Disc Golf Journal Greater Peoria Open | A | 30-May to 31-May-1998 | $87 |
| 3 | | 1998 Gateway Open | B | 06-Jun to 07-Jun-1998 | $170 |
| 2 | | Kansas City Wide Open | A | 13-Jun to 14-Jun-1998 | $385 |
| 1 | | Minnesota Majestic | A | 20-Jun to 21-Jun-1998 | $220 |
| 1 | | In Flight Open | A | 27-Jun to 28-Jun-1998 | $579 |
| 8 | | Sinnissippi Open | B | 04-Jul to 05-Jul-1998 | $53 |
| 7 | | 1998 Lumskull Open | A | 11-Jul to 12-Jul-1998 | |
| 12 | | Quonset Hut Hall of Chains Classic | A | 18-Jul to 19-Jul-1998 | |
| 7 | | 1998 Brent Hambrick Memorial | B | 25-Jul to 26-Jul-1998 | $50 |
| 1 | | Discraft Great Lakes Open | A | 01-Aug to 02-Aug-1998 | $550 |
| 21 | | 1998 PDGA Professional Disc Golf World Championships | M | 03-Aug to 08-Aug-1998 | $90 |
| 4 | | Bronte Creek Inaugural | C | 16-Aug-1998 | |
| 6 | | Rochester Flying Disc Open | B | 22-Aug to 23-Aug-1998 | |
| 1 | | Vintage Cup | B | 29-Aug to 30-Aug-1998 | $207 |
| 4 | | Indian Summer '98/California State Flying Disc Championships | B | 26-Sep-1998 | $40 |
| 5 | | 1998 Faultline Classic | B | 03-Oct to 04-Oct-1998 | $100 |
| 9 | | SoCal Disc Golf Championships | B | 10-Oct to 11-Oct-1998 | $50 |
| 4 | | 20th Gold Pan Open | B | 17-Oct to 18-Oct-1998 | $45 |
| 10 | | 1998 NorCal Series Championships | B | 07-Nov-1998 | |
