| 1. Round | 24/03/2018 | NC Courage [Women] | - | Portland Thorns [Women] | 1:0 | ||||
| 1. Round | 01/04/2018 | Chicago Red Stars [Women] | - | Portland Thorns [Women] | 2:3 | ||||
| 2. Round | 15/04/2018 | Portland Thorns [Women] | - | Orlando Pride [Women] | 2:1 | ||||
| 2. Round | 21/04/2018 | Portland Thorns [Women] | - | Washington Spirit [Women] | 1:1 | ||||
| 2. Round | 29/04/2018 | Utah Royals FC [Women] | - | Portland Thorns [Women] | 1:1 | ||||
| 3. Round | 05/05/2018 | Portland Thorns [Women] | - | Seattle Reign [Women] | 2:3 | ||||
| 3. Round | 10/05/2018 | Houston Dash [Women] | - | Portland Thorns [Women] | 1:1 | ||||
| 3. Round | 12/05/2018 | Portland Thorns [Women] | - | Orlando Pride [Women] | 1:2 |
USA