[13] Philadelphia Union 1-0 Atlanta United [12] 2021-09-25 19:30
Stadium: Subaru Park
Referee: Robert Sibiga Home Manager: Jim Curtin Away Manager: Gonzalo Pineda
Head to Head
| USA MLS | 2021/06/20 18:00 | Atlanta United v Philadelphia Union | D | 2-2 |
| CONCACAF Champions Cup | 2021/05/05 00:00 | Philadelphia Union v Atlanta United | D | 1-1 |
| CONCACAF Champions Cup | 2021/04/28 00:00 | Atlanta United v Philadelphia Union | W | 0-3 |
| World Club Friendlies | 2020/01/29 16:00 | Atlanta United v Philadelphia Union | L | 4-0 |
| USA MLS Play-Offs | 2019/10/25 00:00 | Atlanta United v Philadelphia Union | L | 2-0 |
| USA MLS | 2019/08/31 23:30 | Philadelphia Union v Atlanta United | W | 3-1 |
| USA MLS | 2019/03/17 23:00 | Atlanta United v Philadelphia Union | D | 1-1 |
| USA MLS | 2018/07/07 23:00 | Philadelphia Union v Atlanta United | L | 0-2 |
| USA MLS | 2018/06/02 23:30 | Atlanta United v Philadelphia Union | L | 3-1 |
| USA MLS | 2017/09/27 23:00 | Atlanta United v Philadelphia Union | L | 3-0 |
| USA MLS | 2017/08/26 23:00 | Philadelphia Union v Atlanta United | D | 2-2 |