2017 NRL - Grant Trouville © NRL Photos

St George Illawarra coach Paul McGregor has trimmed his squad to 19 ahead of the Dragons' Round 16 clash against the Newcastle Knights at UOW Jubilee Oval, Kogarah.

Jack de Belin's one-game suspension sees Tariq Sims shift to lock and Tyson Frizell named in the back row.

Will Matthews is the other player who didn't make the cut for Sunday afternoon's game.

Updated Public Transport for Sunday

NRL Squad for Round 16 v Newcastle Knights:

1. Josh Dugan
2. Nene Macdonald
3. Kurt Mann
4. Tim Lafai
5. Jason Nightingale
6. Gareth Widdop (c)
7. Josh McCrone
8. Russell Packer
9. Cameron McInnes
10. Paul Vaughan
19. Tyson Frizell
12. Joel Thompson
11. Tariq Sims
Interchange: 
14. Jacob Host
15. Leeson Ah Mau
16. Hame Sele
17. Taane Milne
20. Blake Lawrie
21. Euan Aitken
22. Matt Dufty

NYC Squad for Round 16 v Newcastle Knights:

1. Steven Marsters
2. Dylan Morris
3. Matheson Johns 
4. Zac Lomax
5. Jason Gillard
6. Tristan Sailor
7. Jackson Willis
8. Matt Sheppard
9. Cooper Purcell
10. TJ Uele
11. Stuart Mason 
12. Jackson Ford
13. Joe Lovodua
Interchange:
14. Tom Angel
16. Trent Peoples
17. Brayden Gallagher
18. Max Bailey
19. Jack Cross
20. Josh Dowel
21. Dane Francis