| 1. Round | 11/03/2012 | D.C. United | - | Sporting Kansas City | 0:1 | ||||
| 1. Round | 25/03/2012 | Vancouver Whitecaps | - | D.C. United | 0:0 | ||||
| 2. Round | 14/04/2012 | New England Revolution | - | D.C. United | 1:2 | ||||
| 3. Round | 12/05/2012 | Houston Dynamo | - | D.C. United | 1:0 |  |
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| 3. Round | 17/05/2012 | D.C. United | - | Colorado Rapids | 2:0 | ||||
| 3. Round | 20/05/2012 | D.C. United | - | Toronto FC | 3:1 | ||||
| 3. Round | 27/05/2012 | D.C. United | - | New England Revolution | 3:2 | ||||
| 5. Round | 22/07/2012 | Columbus Crew | - | D.C. United | 1:0 | ||||
| 6. Round | 12/08/2012 | Sporting Kansas City | - | D.C. United | 2:1 |
USA