A blinding second-half performance from the Knights led to a 25-20 victory over South Sydney in Newcastle, leaving the Rabbitohs without a win in five starts in the National Rugby League.
Trailing 12-6 at the break, the Knights piled on three tries after the restart with Jarrod Mullen crafting two of them and coolly adding a field goal in the 74th minute.
The Knights are fifth on the table and Souths 10th.
