North Queensland Cowboys came from behind to defeat Brisbane Broncos, who are all but guaranteed to finish bottom of the NRL standings.
Seven tries saw Newcastle Knights cruise to victory in the NRL on a day when Canberra Raiders also triumphed.
Melbourne Storm sealed a top-two finish for the fifth straight season, while Cronulla Sharks suffered a worrying injury before the finals.
A 32-12 win over North Queensland Cowboys meant Penrith Panthers sealed the J.J. Giltinan Shield for the first time in 17 years.
South Sydney Rabbitohs were left stunned by a brilliant start from NRL strugglers Canterbury Bulldogs in Thursday's clash.
Kevin Proctor has re-signed with the Gold Coast Titans for 2021.
Josh Papalii has re-signed with the Canberra Raiders, where he is set to finish his NRL career.
Cronulla Sharks are Finals-bound in NRL, while Melbourne Storm are surely headed for a top-two finish.
Newcastle Knights will not finish in the top four of the NRL following a chastening 42-12 loss to the Sydney Roosters.
Penrith Panthers chalked up a 13th consecutive NRL win as Parramatta Eels eventually succumbed after plenty of defending.