| Name | Jak O`Brien |
| Date of birth | Unknown |
| Nationality | Australian |
| Position | Right winger |
| More info | Unavailable |
| Team | Appearances | Goals | Yellow cards | Red cards |
| Blacktown City* | 1 | 0 | 0 | 0 |
| Match Type | Appearances | Goals | Yellow cards | Red cards |
| FFA Cup | 1 | 0 | 0 | 0 |
| Statistic | Margin | Matches |
| Biggest win | N/A | |
| Biggest loss | 1 goal | 13/11/2021 Blacktown City (NSW) 0-1 Central Coast Mariners (Cup) |
| # | Player | Appearances on the same team | Team(s) |
| 1. | Matthew Lewis | 1 | Blacktown City |
| Mario Shabow | 1 | Blacktown City | |
| Adam Berry | 1 | Blacktown City | |
| Jake Trew | 1 | Blacktown City | |
| Charles Mendy | 1 | Blacktown City | |
| Tristian Prendergast | 1 | Blacktown City | |
| Grant Lynch | 1 | Blacktown City | |
| Jordan Smylie | 1 | Blacktown City | |
| Lachlan Campbell | 1 | Blacktown City | |
| Ben Berry | 1 | Blacktown City | |
| Carlos De Oliveira | 1 | Blacktown City | |
| Nicholas O`Brien | 1 | Blacktown City | |
| Jackson Bandiera | 1 | Blacktown City | |
| Dakota Askew | 1 | Blacktown City |
| Team | Date | Match Type | Result | Goals | Bookings | On | Off | Notes |
| Blacktown City* | 13/11/2021 | FFA Cup | Blacktown City (NSW) 0-1 Central Coast Mariners | 74' | Full time |