The Counties Manukau Stingrays have caused a massive upset to beat Akarana 28-22 in the semi-finals of the Ruben Wiki Cup U20s competition on Saturday.

Having dropped their final pool game to the South Island side last week, the Stingrays had the difficult task of facing the previously unbeaten Falcons in the semis.

But they over-matched the defending champions in a thrilling back-and-forth display to advance to next week’s final.

The Stingrays will face the South Island in the final of the competition.