| 26 | | 20th Annual Wintertime Open | B | 21-Feb to 22-Feb-1998 | |
| 7 | | 1998 Caldecott Open | B | 28-Feb to 01-Mar-1998 | |
| 12 | 12.00 | St. Patrick's Classic | B | 28-Mar to 29-Mar-1998 | |
| 9 | | Western State Championships | B | 04-Apr to 05-Apr-1998 | |
| 23 | | Santa Cruz Masters Cup | A | 24-Apr to 26-Apr-1998 | |
| 11 | | Great Northwest Open | B | 02-May to 03-May-1998 | |
| 8 | | Wil-Low Pro/Am Jam | B | 09-May to 10-May-1998 | |
| 8 | | Bob West Memorial | B | 23-May to 24-May-1998 | |
| 12 | | 1998 Gateway Open | B | 06-Jun to 07-Jun-1998 | |
| 12 | | Minnesota Majestic | A | 20-Jun to 21-Jun-1998 | |
| 13 | | In Flight Open | A | 27-Jun to 28-Jun-1998 | |
| 8 | | Sinnissippi Open | B | 04-Jul to 05-Jul-1998 | $53 |
| 8 | | 1998 Lumskull Open | A | 11-Jul to 12-Jul-1998 | |
| 17 | | Quonset Hut Hall of Chains Classic | A | 18-Jul to 19-Jul-1998 | |
| 16 | | 1998 Brent Hambrick Memorial | B | 25-Jul to 26-Jul-1998 | |
| 17 | | Discraft Great Lakes Open | A | 01-Aug to 02-Aug-1998 | |
| 80 | | 1998 PDGA Professional Disc Golf World Championships | M | 03-Aug to 08-Aug-1998 | |
| 9 | | Rochester Flying Disc Open | B | 22-Aug to 23-Aug-1998 | |
| 5 | | Vintage Cup | B | 29-Aug to 30-Aug-1998 | |
| 25 | | 1998 Faultline Classic | B | 03-Oct to 04-Oct-1998 | |
| 28 | | SoCal Disc Golf Championships | B | 10-Oct to 11-Oct-1998 | |
| 5 | | 20th Gold Pan Open | B | 17-Oct to 18-Oct-1998 | |
| 3 | | Shelly Sharpe Memorial | C | 23-Oct to 24-Oct-1998 | $70 |
| 6 | | 1998 NorCal Series Championships | B | 07-Nov-1998 | |
| 9 | | Hahamongna Flying Disc Classic | B | 14-Nov to 15-Nov-1998 | |
| 4 | | Fountain Hills Thrills | C | 21-Nov to 22-Nov-1998 | |
