| 5. Round | 24/07/1998 | Tampa Bay Mutiny | - | Colorado Rapids | 2:3 | ||||
| 5. Round | 28/07/1998 | New England Revolution | - | Colorado Rapids | 1:3 | ||||
| 6. Round | 04/08/1998 | Colorado Rapids | - | Los Angeles Galaxy | 1:6 | ||||
| 6. Round | 07/08/1998 | Kansas City Wizards | - | Colorado Rapids | 3:1 | ||||
| 6. Round | 14/08/1998 | Colorado Rapids | - | Dallas Burn | 0:1 | ||||
| 6. Round | 17/08/1998 | MetroStars | - | Colorado Rapids | 4:1 | ||||
| 6. Round | 20/08/1998 | Colorado Rapids | - | Chicago Fire | 0:2 | ||||
| 6. Round | 28/08/1998 | San Jose Clash | - | Colorado Rapids | 1:3 | ||||
| 7. Round | 01/09/1998 | Colorado Rapids | - | Kansas City Wizards | 3:2 | ||||
| 7. Round | 12/09/1998 | Chicago Fire | - | Colorado Rapids | 3:1 | ||||
| 7. Round | 15/09/1998 | Columbus Crew | - | Colorado Rapids | 2:4 | ||||
| 7. Round | 25/09/1998 | Colorado Rapids | - | Dallas Burn | 3:1 |
Canada