Western beat the improving Indians 2-1 to make it three-from-three in the premier men's championship.
Western lead by two from University, who dropped their first points in being held 3-3 by Howick Pakuranga.
Somerville, still without national representative Ryan Archibald, scored a goal in each half, to Jordan Clarke and Chris Knight,
to beat Slam 2-0.
Southern and Roskill Eden shared the points in a 4-4 draw.
For Southern, Marc Laurence scored three goals with drag flicks from penalty corners. Rowan Laurence added the other with a deflection, also from a penalty corner.
Dharmesh Puna scored a couple and Kieran Daji and Beau Collins one each for Roskill Eden, who trailed 3-2 at halftime before leading 4-3.
Indians dominated the first half of their game with Western but could not turn that advantage into goals.
Western came back strongly and goals to Hernan Dapena and Michael Gunn had them ahead with 10 minutes to play. Nilesh Patel narrowed the gap with eight to play but Indians could not get a second.
Western and Somerville continued their strong start to the women's competition with three-goal winning margins to retain their unblemished records.
Even without four New Zealand players, Somerville were too strong for University, scoring three second-half goals to win 3-0.
Ahead 2-0 at halftime, Western scored another two after the break in beating Roskill Eden 4-1.
Grammar Windsor scored the only goal of a hard-fought match to beat Howick Pakuranga and hold third place. Kirsty Redfern scored two in Slam's 3-1 win over Mt Eden.
Howick Pakuranga, University and Mt Eden are still searching for their first point of the season.
