 Tu'ungafasi's shifts off the bench provided support to let the All Blacks win the series 3-0.He did also, however, cause controversy in the media for a head-high tackle in the first test, with media deeming Tu'ungafasi and Sam Cane's combined tackle on French winger, Rémy Grosso, worthy of a red card, following a fracture to Grosso's face.Tu'ungafasi earned a start at tighthead prop against Argentina, at Buenos Aires, during the 2018 Rugby Championship.