| 1. Round | 20/03/1998 | Los Angeles Galaxy | - | San Jose Clash | n.P. |  |
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| 1. Round | 27/03/1998 | San Jose Clash | - | Colorado Rapids | n.P. | |
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| 2. Round | 04/04/1998 | San Jose Clash | - | Dallas Burn | n.P. | |
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| 4. Round | 26/06/1998 | San Jose Clash | - | Los Angeles Galaxy | 1:2 | ||||
| 5. Round | 02/07/1998 | San Jose Clash | - | Columbus Crew | n.P. | ||||
| 5. Round | 14/07/1998 | Miami Fusion | - | San Jose Clash | n.P. | ||||
| 5. Round | 17/07/1998 | San Jose Clash | - | Tampa Bay Mutiny | 0:1 | ||||
| 5. Round | 24/07/1998 | San Jose Clash | - | Kansas City Wizards | n.P. | |
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| 5. Round | 28/07/1998 | San Jose Clash | - | Chicago Fire | 3:0 | |
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| 6. Round | 04/08/1998 | New England Revolution | - | San Jose Clash | 3:0 | ||||
| 6. Round | 08/08/1998 | San Jose Clash | - | MetroStars | 5:1 | |
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| 6. Round | 14/08/1998 | Chicago Fire | - | San Jose Clash | 2:1 | ||||
| 6. Round | 21/08/1998 | San Jose Clash | - | Dallas Burn | n.P. | ||||
| 6. Round | 28/08/1998 | San Jose Clash | - | Colorado Rapids | 1:3 | ||||
| 7. Round | 02/09/1998 | Tampa Bay Mutiny | - | San Jose Clash | 2:1 | |
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| 7. Round | 04/09/1998 | Kansas City Wizards | - | San Jose Clash | 5:1 |
USA