| MLS | 21/10/11 | New York RB | - | Philadelphia Union | 1:0 | ||||
| MLS | 18/03/12 | Philadelphia Union | - | Colorado Rapids | 1:2 | ||||
| MLS | 19/04/15 | Philadelphia Union | - | New England Revolution | 1:2 |
| MLS | 21/10/11 | New York RB | - | Philadelphia Union | 1:0 | ||||
| MLS | 18/03/12 | Philadelphia Union | - | Colorado Rapids | 1:2 | ||||
| MLS | 19/04/15 | Philadelphia Union | - | New England Revolution | 1:2 |
| Zachary Louis Pfeffer | |
| Born: | 06.01.1995 |
| Place of birth: |
Dresher, PA, 
USA |
| Nationality: |
USA
|
| Height: | 177 cm |
| Position(s): | Offensive Midfielder |
| Foot: | both |