With four games left until finals, Waaia, which is now third, let one slip, losing to Katandra (11th) by the smallest of margins.
The Kats won 45-44 to record their fifth win of the campaign, leaving them a game and percentage outside the top eight.
Katunga got the chocolates against Deniliquin, winning 41-37.
The Swans have not lost since May 1 but have matches against Katamatite and Strathmerton to come in the final month of the home and away season, which they will need to win to remain in top position.
The Rovers’ (six wins) are hanging on to eighth spot, with Tungamah and Tocumwal on the same amount of victories.
Speaking of Tocumwal, the Bloods survived a scare from the winless Yarroweyah, taking the four points in a 41-39 scoreline.
They are now just percentage outside the eight but have played 13 games compared to the Bears’ 11 and the Rovers’ 12.
Katamatite sit fifth after recording win number nine - a 37 to 30 victory over Tungamah.
Tigers coach Tesslyn Saunders said the team's defensive pressure stood out.
“It was fantastic,” she said.
“The feeling was very positive after yesterday's (Saturday) game.
“We worked on a few things at training on Thursday and implemented them in the game so that was good to see.
“Our defensive pressure all over the court was a stand out for the entire game.”
Saunders singled out the game of Ria Hodge, who excelled in her new role.
“Ria Hodge played in defense for the first time and was our best on court,” she said.
With a week off coming up this weekend, Saunders was hoping to have some players return for injuries as they attack the final month of the season.
Mathoura took advantage of Deniliquin's loss, leapfrogging them into seventh on the ladder after defeating Rennie by 25 goals.
The Timbercutters have won five of their last six matches after the 47-22 win on Saturday.
Jerilderie were too good for Blighty winning 57-33.
The victory was the Demons ninth of the year and sees them sit in fourth spot.
Emily Buzza and Amy Carter continued their dominate seasons in the ring as Strathmerton knocked off Berrigan 71-39.
Buzza nearly raised her bat as she scored 49 times, while Carter chipped with 22 in a dominate display from the Bulldogs, which sit in second place and percentage off top.
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