Southern survived a late come back from University to win 25-24 at Logan Park.
The Magpies dominated through its powerful pack for three quarters of the game and led 25-10. But University finished strongly, scoring two converted tries in the last 10 minutes.
Alhambra-Union secured its first win of the season with a dramatic 31-28 win against Kaikorai at the North Ground, Dunedin defeated Taieri 38-19 at Peter Johnstone Park, and Harbour beat Zingari-Richmond 50-35 in a high-scoring encounter at Montecillo.