A break from Brendon Gotuno presented the Vipers with the first opportunity to score.
Fast hands put Rex Tandowa over to score out on the wing in the 14th minute.
Repeated sets to the Vipers had the defending champions under the pump but one mistake from the Vipers turned the tide.
A short ball from Noel Joel sent a charging Casey Dickson in for the Tigers’ first points.
Former Gurias star now Tigers halfback, Jason Missian, added the extras to put his side in front after 26 minutes.