| 3. Round | 02/05/1998 | San Jose Clash | - | New England Revolution | 1:3 | ||||
| 3. Round | 08/05/1998 | Colorado Rapids | - | San Jose Clash | 2:3 | ||||
| 3. Round | 15/05/1998 | San Jose Clash | - | Miami Fusion | 2:0 | ||||
| 3. Round | 22/05/1998 | Kansas City Wizards | - | San Jose Clash | 0:1 | ||||
| 3. Round | 29/05/1998 | Columbus Crew | - | San Jose Clash | 4:1 | ||||
| 4. Round | 02/06/1998 | San Jose Clash | - | D.C. United | 0:4 | ||||
| 4. Round | 10/06/1998 | Chicago Fire | - | San Jose Clash | 5:2 | ||||
| 7. Round | 02/09/1998 | Tampa Bay Mutiny | - | San Jose Clash | 2:1 | ||||
| 7. Round | 04/09/1998 | Kansas City Wizards | - | San Jose Clash | 5:1 |
USA