St George Illawarra coach Paul McGregor has trimmed his squad to 19 ahead of the Dragons' Round 21 clash against the Gold Coast Titans at Netstrata Jubilee Stadium, Kogarah on Saturday, August 10.

Blake Lawrie (concussion) has been unable to overcome the protocols in place for head injuries and will miss his first game of season 2019.

Zac Lomax (hamstring) has also been ruled out of Tuesday's initial squad.

James Graham (400 first grade games), Euan Aitken (100 NRL games) and Jackson Ford (NRL debut) will all celebrate special milestones against the Titans.

Secure your tickets here.

NRL squad for Round 21 v Gold Coast Titans –

1. Corey Norman – sponsored by Illawarra Mercury/St George & Sutherland Shire Leader
2. Jason Saab – sponsored by SMAI
3. Euan Aitken – sponsored by University of Wollongong
4. Tim Lafai – sponsored by Kingsgrove Sports Centre
5. Mikaele Ravalawa – sponsored by Tosich Group Construction
6. Gareth Widdop (c) – sponsored by Dynamic Projects
7. Ben Hunt – sponsored by Paul's Customs and Forwarding Solutions
8. James Graham – sponsored by EFEX
9. Cameron McInnes – sponsored by Floormania
10. Paul Vaughan – sponsored by My Muscle Chef
11. Patrick Kaufusi – sponsored by Wollongong Jetski
12. Tariq Sims – sponsored by Stonemasons & Landscapers (since 1970)
13. Tyson Frizell – sponsored by Val Morgan

Interchange
14. Jeremy Latimore – sponsored by Dincel Construction System
15. Korbin Sims – sponsored by Stonemasons & Landscapers (since 1970)
16. Jackson Ford– sponsored by Professionals Padstow
17. Luciano Leilua – sponsored by Domus Lighting
18. Tristan Sailor
19. Josh Kerr