Playoffs
- Each round except the final was a two-game aggregate goal series decided by extra time and a penalty shoot-out immediately following the second game of the series, if necessary. The away goals rule was not used as a tie-breaker. Tournament was re-seeded after the first round.
| First Round | Semifinals | Final | |||||||||||||||
| 1 | Montreal Impact | 2 | 1 | 3 | |||||||||||||
| 4 | Seattle Sounders | 1 | 2 | 3 | 4 | Seattle Sounders | 2 | 2 | 4 | ||||||||
| 5 | Portland Timbers | 0 | 0 | 0 | 4 | Seattle Sounders (aet) (p) | 1 (4) | ||||||||||
| 6 | Richmond Kickers | 1 (3) | |||||||||||||||
| 2 | Rochester Raging Rhinos | 1 | 1 | 2 | |||||||||||||
| 3 | Vancouver Whitecaps | 0 | 0 | 0 (4) | 6 | Richmond Kickers | 3 | 1 | 4 | ||||||||
| 6 | Richmond Kickers (aet) (p) | 0 | 0 | 0 (5) | |||||||||||||
Read more about this topic: 2005 United Soccer Leagues, Standings, First Division