In the 67th minute, Riverina keeper Erin Sycamore made a scrambling save to stop Jamie Gedye scoring again from a breakaway, and — in the 79th — Chelsea Simpson's header from a corner was cleared off the Riverina line.
The final score was a reversal of the scoreline from the teams' last meeting.
Gisborne Laundry Services Riverina still lead the competition with 30 points, but Heavy Equipment Services United have closed the gap to three points and have a game in hand.
The teams are scheduled to meet again on October 4.
In the other game, fourth-placed Bohemians beat third-placed Campion College 3-1. Bohemians are now two points behind Campion, but the students have a game in hand.
The game between Gisborne Girls' High School and Tatapouri Marist Thistle was postponed.