World Rugby insist they've set the correct threshold in the men's game for a head acceleration event that requires an off-field assessment.

Triggers set off via newly sanctioned smart mouthguards saw Chiefs midfielder Anton Lienert-Brown and Crusaders lock Quinten Strange undergo an HIA in the opening Super Rugby match of the season.

Both players appeared to question the need for them to leave the field.

Sportstalk host Jason Pine explains the extent of the confusion.

LISTEN ABOVE

World Rugby insist they've set the correct threshold in the men's game for a head acceleration event that requires an off-field assessment.
Triggers set off via newly sanctioned smart mouthguards saw Chiefs midfielder Anton Lienert-Brown and Crusaders lock Quinten Strange undergo an HIA in the opening Super Rugby match of the season.
Both players appeared to question the need for them to leave the field.
Sportstalk host Jason Pine explains the extent of the confusion.
LISTEN ABOVE

With a straight down the middle approach, Heather du Plessis-Allan Drive on Newstalk ZB delivers the very latest news and views to New Zealanders as they wrap up their day.