| Name | Alex Mullen |
| Date of birth | 13/06/1993 |
| Nationality | Australian |
| Position | Center midfield |
| More info | Unavailable |
| Team | Appearances | Goals | Yellow cards | Red cards |
| Campbelltown City* | 1 | 0 | 0 | 0 |
| Sydney FC | 3 | 0 | 0 | 0 |
| Match Type | Appearances | Goals | Yellow cards | Red cards |
| League | 1 | 0 | 0 | 0 |
| Asian Champions League | 2 | 0 | 0 | 0 |
| FFA Cup | 1 | 0 | 0 | 0 |
| Statistic | Margin | Matches |
| Biggest win | 1 goal | 16/03/2016 Pohang Steelers 0-1 Sydney FC (ACL) |
| Biggest loss | 2 goals | 2/04/2016 Sydney FC 0-2 Adelaide United |
| 31/07/2019 Campbelltown City (SA) 1-3 Melbourne City FC (Cup) |
| # | Player | Appearances on the same team | Team(s) |
| 1. | Milos Dimitrijevic | 3 | Sydney FC |
| Robert Stambolziev | 3 | Sydney FC | |
| Vedran Janjetovic | 3 | Sydney FC | |
| Zac Anderson | 3 | Sydney FC | |
| Christopher Naumoff | 3 | Sydney FC | |
| Brandon O`Neill | 3 | Sydney FC | |
| 7. | Riley Woodcock | 2 | Sydney FC |
| Aaron Calver | 2 | Sydney FC | |
| Andrew Hoole | 2 | Sydney FC | |
| George Blackwood | 2 | Sydney FC | |
| Shane Smeltz | 2 | Sydney FC | |
| Milos Ninkovic | 2 | Sydney FC | |
| Ali Abbas | 2 | Sydney FC |
| Team | Date | Match Type | Result | Goals | Bookings | On | Off | Notes |
| Sydney FC | 16/03/2016 | Asian Champions League | Pohang Steelers 0-1 Sydney FC | 89' | Full time | |||
| 2/04/2016 | League | Sydney FC 0-2 Adelaide United | Kick off | Full time | ||||
| 3/05/2016 | Asian Champions League | Guangzhou Evergrande 1-0 Sydney FC | 80' | Full time | ||||
| Campbelltown City* | 31/07/2019 | FFA Cup | Campbelltown City (SA) 1-3 Melbourne City FC | Kick off | Full time |