Rochester was the only local side to host a game in round one, with Echuca and Moama travelling elsewhere, bringing down the Katty Tigers in the closest game of the round.
Rochy won the toss and elected to bowl, jagging the wickets of Sienna Hutchinson (3) and Matilda Iddles (4) early.
Keeley Major got two wickets in as many balls in the ninth over, snaring Christina Roberts (6) and Georgia Watson for a golden duck, breaking the game open and finishing with figures of 3-9.
The visitor batted out its 20 overs and finished 6-72 — giving Rochester a decent target for victory.
Despite opener Hayley Broucek (3) falling early, fellow opener Harriet East did the bulk of the work — retiring not out on 31.
Cadence Major (3), Sarah Taylor (golden duck) and Alyssa Braithwaite (2) couldn’t get much going.
Ever the all-rounder, Keeley Major guided her side home with 15 not out, batting at six, with three overs to spare.
Round two will see Bamawm-Lockington United play its first game of the season against Breretons Bakery, Rochester will travel to Cooma and Moama will host cross-border rival Echuca.