YMP remain on top of the table on 37 points, Whangara are on 32, HSOG 30, Claydens Waikohu 22 and Ritana 19.
High School Old Girls will want to finish second; YMP will want to lock up top spot.
“This game will be very competitive,” netball commentator Sherrill Beale said.
“It’s been a win apiece between these two teams this season, and the goal margin has been three and four goals.”
Both teams have two games to go ahead of the top-four semifinals.
“Their last outing was virtually goal for goal, so I am expecting the same on Wednesday night,” Beale said.
In the earlier match, at 6pm, Waikohu take on Champers Horouta Gold.
Horouta had players missing when they lost heavily to Ritana on Saturday. Tomorrow night they will be pumped to make up for it.
“Waikohu have had two wins against Horouta this season, but Horouta will take heart in that Waikohu join them in losing to Ritana this round,” Beale said.
“However, Waikohu know they are in a tenuous situation and could lose their top-four spot if Ritana can beat YMP on Saturday.
“So this win is very important to them.
“Horouta Gold will need their top game for the full hour.”
Waikohu coach Cheryl Te Rito said her girls knew what was at stake.
“They know how important it is to win tomorrow night and they are ready for it.”
She said the loss of midcourter Missy Ruru, out injured for the rest of the season, was a blow.
“But Jessica Ruru and Atlee Wainohu have stepped up and have been improving,” Te Rito said.
“I am sure the girls will step up to the plate tomorrow night.
“If we win, we are assured of the top-four playoffs.”