Penrith spoiled retiring Canberra skipper Alan Tongue's final game in the Australian capital with a gritty 19-18 the National Rugby League victory on Saturday night.
A 79th minute try to Raiders utility Mick Picker ensured a grandstand finish, but a controversial decision to not award Canberra a penalty in the dying seconds denied them a potential match-winning 50 metre penalty shot at goal.
Canberra fullback Josh Dugan appeared to be dragged down by a Panthers player after he grubbered ahead for himself, but he was not rewarded.
