| 1 | Saturday, 07/05/1988 | Melville Alemannia - Kingsway Olympic | 0:3 | ||||||
| 2 | Saturday, 07/05/1988 | Perth City - Balga | 1:3 | ||||||
| 3 | Saturday, 07/05/1988 | Albany - Wanneroo City | 0:1 | ||||||
| 4 | Saturday, 07/05/1988 | Gosnells City - Booragoon Zavicaj | 4:3 | ||||||
| 5 | Saturday, 07/05/1988 | Whitford City - Fremantle Benfica | 1:7 | ||||||
| 6 | Saturday, 07/05/1988 | Bayswater Inter - North Perth Croatia | 2:0 | ||||||
| 7 | Saturday, 07/05/1988 | Osborne Park Galeb - Armadale Park | 2:0 | ||||||
| 8 | Saturday, 07/05/1988 | Ferndale United - Stirling Macedonia | |||||||
| 9 | Saturday, 07/05/1988 | Bassendean Caledonian - Windsor Athletic | 6:1 | ||||||
| 10 | Saturday, 07/05/1988 | Forrestfield United - East Perth Vardar | 2:1 | ||||||
| 11 | Saturday, 07/05/1988 | Dianella Serbia - Spearwood Dalmatinac | 2:5 | ||||||
| 12 | Saturday, 07/05/1988 | Rockingham City - Kwinana United | 0:2 | ||||||
| 13 | Saturday, 07/05/1988 | Floreat Athena - Subiaco City | 7:3 | ||||||
| 14 | Saturday, 07/05/1988 | Perth Italia - Kelmscott | 6:2 | ||||||
| 15 | Saturday, 07/05/1988 | Inglewood Kiev - Morley-Windmills | 1:2 | ||||||
| Bye: Cockburn United | |||||||||
| 16 | Saturday, 18/06/1988 | Spearwood Dalmatinac - Perth Italia | 2:0 | ||||||
| 17 | Saturday, 18/06/1988 | Floreat Athena - Kingsway Olympic | 3:1 | ||||||
| 18 | Saturday, 18/06/1988 | Forrestfield United - Stirling Macedonia | 1:2 | ||||||
| 19 | Saturday, 18/06/1988 | Morley-Windmills - Wanneroo City | 2:3 | ||||||
| 20 | Saturday, 18/06/1988 | Bassendean Caledonian - Osborne Park Galeb | 1:0 | ||||||
| 21 | Saturday, 18/06/1988 | Cockburn United - Kwinana United | 3:2 | ||||||
| 22 | Saturday, 18/06/1988 | Gosnells City - Fremantle Benfica | 1:2 | ||||||
| 23 | Saturday, 18/06/1988 | Balga - Bayswater Inter | 1:5 |
| 24 | Saturday, 23/07/1988 | Bayswater Inter - Cockburn United | 3:1 | ||||||
| 25 | Saturday, 23/07/1988 | Spearwood Dalmatinac - Bassendean Caledonian | 6:1 | ||||||
| 26 | Saturday, 23/07/1988 | Fremantle Benfica - Stirling Macedonia | 0:7 | ||||||
| 27 | Saturday, 23/07/1988 | Floreat Athena - Wanneroo City | 6:2 |
| 28 | Saturday, 20/08/1988 | Floreat Athena - Spearwood Dalmatinac | 2:1 | ||||||
| 29 | Saturday, 20/08/1988 | Bayswater Inter - Stirling Macedonia | 1:0 |
| 30 | Sunday, 09/10/1988 | Floreat Athena - Bayswater Inter | 2:1 |