St George Illawarra centre Zac Lomax has been ruled out of the Dragons' Round 14 clash against the Manly-Warringah Sea Eagles due to a broken thumb.

The NRL have granted the Dragons approval for Lachlan Maranta to replace Lomax in the club's 21-man squad.

Lomax's return-to-play time frame will be updated in due course.

Updated NRL squad for Round 14 v Manly-Warringah Sea Eagles –

1. Matt Dufty – sponsored by Dynamic Projects

2. Jonus Pearson – sponsored by SMAI

3. Euan Aitken – sponsored by University of Wollongong

22. Lachlan Maranta – sponsored by Tosich Group

5. Mikaele Ravalawa – sponsored by Kingsgrove Sports Centre

6. Corey Norman – sponsored by Illawarra Mercury/St George & Sutherland Shire Leader

7. Ben Hunt – sponsored by Paul's Customs and Forwarding Solutions

8. Blake Lawrie – sponsored by EFEX

9. Cameron McInnes (c) – sponsored by Floormania

10. Paul Vaughan – sponsored by My Muscle Chef

11. Jacob Host – sponsored by Wollongong Jetski

12. Tariq Sims – sponsored by Stonemasons & Landscapers (since 1970)

13. Tyson Frizell (c) – sponsored by Val Morgan

Interchange:

14. Jeremy Latimore – sponsored by Dincel Construction System

15. Reece Robson – sponsored by Professionals Padstow

16. Korbin Sims – sponsored by Stonemasons & Landscapers (since 1970)

17. Jai Field – sponsored by Domus Lighting

18. Luciano Leilua

19. Jordan Pereira

20. Josh Kerr

21. Lachlan Timm