Rotoiti face a tough task to reach the top four in the Premier 1 competition after suffering major injuries.
Fifth-placed Rotoiti host seventh-placed Greerton Marist at home tomorrow in the fifth round, but will be without influential vice-captain and hooker Joe Royal and prop Cory Masters.
Rotoiti come into the game after a dramatic 30-28 victory over Te Puna at Emery Park last Saturday, a win clinched with the last kick of the match - a penalty from the boot of Logan Henry.
Committee member Willie Emery said it was a must-win game for the side and discipline would be essential due to the loss of two key players with Royal out for the rest of the season after breaking his thumb.
"Our target is to reach the semifinal stages but to get there we have to beat Greerton to have any real chance," he said. "It is a real loss both Joe and Cory are real leaders on the pitch so the boys will have to rally round and stand up.