| Regular Season | Saturday, 04/04/1998 | Western Knights - Joondalup City | 6:1 | ||||||
| Regular Season | Saturday, 11/04/1998 | Stirling Macedonia - Western Knights | 2:3 | ||||||
| Regular Season | Saturday, 18/04/1998 | Western Knights - Perth SC | 2:0 | ||||||
| Regular Season | Saturday, 25/04/1998 | Floreat Athena - Western Knights | 4:2 | ||||||
| Regular Season | Sunday, 03/05/1998 | Western Knights - Fremantle City | 4:2 | ||||||
| Regular Season | Saturday, 09/05/1998 | Sorrento - Western Knights | 2:2 | ||||||
| Regular Season | Saturday, 16/05/1998 | Western Knights - Cockburn City | 1:1 | ||||||
| Regular Season | Saturday, 23/05/1998 | Inglewood Falcons - Western Knights | 0:3 | ||||||
| Regular Season | Sunday, 31/05/1998 | Western Knights - Dianella White Eagles | 6:2 | ||||||
| Regular Season | Saturday, 06/06/1998 | Kingsway Olympic - Western Knights | 1:1 | ||||||
| Regular Season | Saturday, 13/06/1998 | Bayswater City Panthers - Western Knights | 0:1 | ||||||
| Regular Season | Saturday, 20/06/1998 | Joondalup City - Western Knights | 3:1 | ||||||
| Regular Season | Saturday, 27/06/1998 | Western Knights - Stirling Macedonia | 4:1 | ||||||
| Regular Season | Saturday, 04/07/1998 | Perth SC - Western Knights | 1:0 | ||||||
| Regular Season | Saturday, 11/07/1998 | Western Knights - Floreat Athena | 3:0 | ||||||
| Regular Season | Sunday, 19/07/1998 | Fremantle City - Western Knights | 0:0 | ||||||
| Regular Season | Saturday, 25/07/1998 | Western Knights - Sorrento | 5:3 | ||||||
| Regular Season | Saturday, 01/08/1998 | Cockburn City - Western Knights | 0:5 | ||||||
| Regular Season | Saturday, 08/08/1998 | Western Knights - Inglewood Falcons | 1:0 | ||||||
| Regular Season | Saturday, 15/08/1998 | Dianella White Eagles - Western Knights | 0:4 | ||||||
| Regular Season | Saturday, 22/08/1998 | Western Knights - Kingsway Olympic | 0:2 | ||||||
| Regular Season | Saturday, 29/08/1998 | Western Knights - Bayswater City Panthers | 3:2 | ||||||
| 3 | Champion of Champions Finals Series | Sunday, 20/09/1998 | Western Knights - Fremantle City | 2:0 | |||||
| 5 | Champion of Champions Finals Series | Sunday, 11/10/1998 | Western Knights - Sorrento | 3:1 |