Parramatta Eels and Gold Coast Titans each earned wins in Sunday's NRL action.
Brisbane Broncos looked poised to end a dreadful run of results, only to fall victim to a late attack from Cronulla Sharks.
Semi Valemei's first NRL try was crucial for the Canberra Raiders, while there was a controversial try in Cronulla's win.
Penrith Panthers beat North Queensland Cowboys on Sunday after Cronulla Sharks had earlier trounced New Zealand Warriors.
Charlie Staines scored four tries on his NRL debut and is now eager to fight to stay in the Penrith Panthers side.
Charlie Staines scored four tries on his NRL debut as the Penrith Panthers regained top spot in the ladder.
Penrith Panthers moved up to second in the NRL, though there was no such joy for Brisbane Broncos, whose players were left in tears.
An independent examination has deemed the field of play acceptable at Bankwest Stadium despite recent concerns.
After falling behind, Wests Tigers scored 34 points without reply to help Michael Maguire's side record back-to-back wins.
Manly Sea Eagles continued their excellent form in the NRL but saw their injury woes deepen.