A 32-12 win over North Queensland Cowboys meant Penrith Panthers sealed the J.J. Giltinan Shield for the first time in 17 years.
Cronulla Sharks are Finals-bound in NRL, while Melbourne Storm are surely headed for a top-two finish.
Valentine Holmes converted a drop goal as North Queensland Cowboys snatched a golden point triumph over St George Illawarra Dragons.
Todd Payten will take charge of North Queensland Cowboys from next NRL season.
NRL leaders Penrith Panthers show few signs of slowing down, while the New Zealand Warriors were in fine form against the Newcastle Knights.
Blake Green's NRL career was in doubt on Sunday after the Newcastle Knights veteran suffered a serious injury.
Kevin Proctor was deemed to have bitten Shaun Johnson in his 250th NRL game, but the Sharks playmaker played down the incident.
Parramatta Eels and Gold Coast Titans each earned wins in Sunday's NRL action.
Canberra Raiders players Josh Papalii and Joe Tapine declined to take part in the NRL's vaccination drive, but they can play this weekend.
Melbourne Storm produced a clinical second half at Brisbane Broncos to climb to the top of the NRL standings.