Tahitian newcomers Dragon created history on Wednesday after coming from behind to beat Oceania football champions Auckland City 3-1 at Trusts Arena.
It marked the first ever away win for a Tahitian club over a New Zealand opponent and Dragon coach Ludovic Graugnard says now everything is in their hands to qualify.
The win tightens an already tense three-horse race for the semi-finals - Auckland still lead Group A on nine points, two clear of Dragon and Waitakere United, who eased past Mont-Dore 3-1 in the evening game.
Meanwhile Amicale FC and Ba have confirmed their places in the final four.
Vanuatu champions Amicale beat 2010 O-League winners Hekari United while Fiji's Ba thrashed newcomers Solomon Warriors 5-0.
Both teams have 10 points from four matches and can't be overtaken in Group A with two rounds to go.