[5] Seattle Sounders FC 0-1 Philadelphia Union [5] 2018-09-20 03:00
Stadium: Lumen Field Round: 1
Referee: Ismail Elfath Home Manager: Brian Schmetzer Away Manager: Jim Curtin
Head to Head
| USA MLS | 2017/10/01 17:00 | Philadelphia Union v Seattle Sounders | L | 2-0 |
| USA MLS | 2016/04/17 02:00 | Seattle Sounders v Philadelphia Union | W | 2-1 |
| USA MLS | 2015/06/24 23:00 | Philadelphia Union v Seattle Sounders | L | 1-0 |
| USA US Open Cup | 2014/09/16 23:30 | Philadelphia Union v Seattle Sounders | W | 1-3 |
Home History
| USA MLS | 2018/09/16 02:00 | Vancouver Whitecaps v Seattle Sounders | W | 1-2 |
| USA MLS | 2018/09/01 20:00 | Seattle Sounders v Sporting Kansas City | W | 3-1 |
| USA MLS | 2018/08/27 01:30 | Portland Timbers v Seattle Sounders | W | 0-1 |
| USA MLS | 2018/08/18 20:00 | Seattle Sounders v LA Galaxy | W | 5-0 |
| USA MLS | 2018/08/13 02:00 | Seattle Sounders v FC Dallas | W | 2-1 |
| USA MLS | 2018/08/05 00:00 | Minnesota United v Seattle Sounders | W | 1-2 |
| USA MLS | 2018/07/29 21:00 | Seattle Sounders v New York City FC | W | 3-1 |
| USA MLS | 2018/07/26 02:30 | San Jose Earthquakes v Seattle Sounders | W | 0-1 |
Away History
| USA MLS | 2018/09/15 23:30 | Philadelphia Union v CF Montreal | L | 1-4 |
| USA MLS | 2018/09/01 23:30 | Orlando City SC v Philadelphia Union | D | 2-2 |
| USA MLS | 2018/08/30 00:00 | DC United v Philadelphia Union | W | 0-2 |
| USA MLS | 2018/08/25 23:00 | Philadelphia Union v New England Revolution | W | 1-0 |
| USA MLS | 2018/08/18 23:00 | Philadelphia Union v New York City FC | W | 2-0 |
| USA MLS | 2018/08/11 23:30 | New England Revolution v Philadelphia Union | W | 2-3 |
| USA US Open Cup | 2018/08/08 23:00 | Philadelphia Union v Chicago Fire | W | 3-0 |
| USA MLS | 2018/08/05 03:00 | Portland Timbers v Philadelphia Union | L | 3-0 |