There are now just two teams remaining in the race to win the NRL premiership this year.
Melbourne crushed the Roosters in the opening preliminary final at AAMI Park on Friday evening.
Meanwhile, the Panthers advanced through to a fifth straight grand final appearance when they beat the Sharks.
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NRL PRELIM FINALS: RESULTS, TEAMS
Melbourne Storm 48-18 Sydney Roosters
Friday, September 27 at AAMI Park (7.50pm AEST)
Melbourne confirmed team:
1. Ryan Papenhuyzen
2. Will Warbrick
3. Jack Howarth
4. Nick Meaney
5. Xavier Coates
6. Cameron Munster
7. Jahrome Hughes
8. Nelson Asofa-Solomona
9. Harry Grant
10. Josh King
11. Shawn Blore
12. Eli Katoa
13. Trent Loiero
14. Tyran Wishart
15. Christian Welch
16. Tui Kamikamica
17. Alec MacDonald
18. Grant Anderson
Storm team news:
Craig Bellamy has named an unchanged side after they brushed aside the Sharks in their qualifying final to book a spot in the prelims.
Sydney confirmed team:
1. James Tedesco
2. Daniel Tupou
3. Joseph Suaalii
4. Joey Manu
5. Dom Young
6. Luke Keary
7. Sandon Smith
8. Jared Waerea-Hargreaves
9. Connor Watson
10. Lindsay Collins
11. Angus Crichton
12. Sitili Tupouniua
23. Victor Radley
14. Spencer Leniu
15. Naufahu Whyte
16. Nat Butcher
17. Terrell May
18. Zach Dockar-Clay
Roosters team news:
Victor Radley made a surprise comeback from injury during last week's win over the Sea Eagles and has been named to start at lock.
Naufahu Whyte dropped to the pine as a result of Radley's late inclusion with Siua Wong dropping out of the 17. The same bench rotation has been named by Trent Robinson.
Penrith Panthers 26-6 Cronulla Sharks
Saturday, September 28 at Accor Stadium (7.50pm AEST)
Penrith confirmed team:
1. Dylan Edwards
2. Sunia Turuva
3. Izack Tago
4. Paul Alamoti
5. Brian To'o
6. Jarome Luai
7. Nathan Cleary
8. Moses Leota
9. Mitch Kenny
10. James Fisher-Harris
11. Luke Garner
12. Liam Martin
13. Isaah Yeo
14. Brad Schneider
15. Lindsay Smith
16. Liam Henry
17. Matt Eisenhuth
18. Casey McLean
Panthers team news:
Scott Sorensen dropped out late during the first week of the finals due to a hamstring issue and won't return this week despite being listed in the extended squad.
Brad Schneider featured off the bench during the qualifying final win over the Roosters and has got the nod over Trent Toelau again.
Cronulla confirmed team:
1. Will Kennedy
2. Sione Katoa
4. Kayal Iro
14. Sifa Talakai
5. Ronaldo Mulitalo
6. Braydon Trindall
7. Nicho Hynes
8. Toby Rudolf
9. Blayke Brailey
10. Oregon Kaufusi
11. Briton Nikora
12. Teig Wilton
13. Cameron McInnes
15. Jack Williams
16. Royce Hunt
17. Thomas Hazelton
18. Daniel Atkinson
20. Mawene Hiroti
Sharks team news:
Jesse Ramien made a successful return from injury during the win over the Cowboys but since been ruled out of the prelim. Kayal Iro, who was also under an injury cloud, will play.
Sifa Talakai starts in the centres with Ramien unavailable, while Daniel Atkinson has been added to the pine.