The Under 16s Harold Matthews Cup has developed almost every NSW-based star since 1970. The competition has 16 teams competing over 9 rounds.
2019 Harold Matthews Squad:
| Christian Abal |
| Trent Barton-Shaw |
| Ned Chapman |
| Blake Cunningham |
| Jordan Dickson |
| Corey Friday |
| Joseph Hayek |
| Deon Iro |
| Zac Knight |
| Aaron Kurnoth |
| Josh Leifi |
| Tye Leyshon |
| Bush Toma Loi |
| John Lolohea |
| Troy Marsters |
| Rowan McIntosh |
| Antonio Namoli |
| Damian Nati |
| Sam Nolland |
| Jodeci Polutele |
|
| Jack Rule |
| Siafolau Siafolau |
| Ahmed Skaf |
| Adam Taleb |
| Siale Toetuu |
| Tyler Vasilovski |
| Sonasi Vave |
| BJ Wilson |
| Sam Woollett |
Coach: Tony Cunningham
