| 2. Round | 03/04/1998 | Colorado Rapids | - | Los Angeles Galaxy | 0:1 | ||||
| 2. Round | 24/04/1998 | Los Angeles Galaxy | - | Tampa Bay Mutiny | 5:1 | ||||
| 2. Round | 28/04/1998 | Kansas City Wizards | - | Los Angeles Galaxy | 0:2 |  |
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| 3. Round | 16/05/1998 | Columbus Crew | - | Los Angeles Galaxy | 2:4 | ||||
| 3. Round | 19/05/1998 | Chicago Fire | - | Los Angeles Galaxy | 3:1 |  |
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| 3. Round | 29/05/1998 | Los Angeles Galaxy | - | Chicago Fire | n.P. | ||||
| 7. Round | 15/09/1998 | San Jose Clash | - | Los Angeles Galaxy | n.P. | ||||
| 7. Round | 19/09/1998 | Los Angeles Galaxy | - | San Jose Clash | 0:1 |
Mexico