Jac Morgan replaced Tom Curry 54 minutes into the second Test in Melbourne
The boss of World Rugby has rejected Australia coach Joe Schmidt's claim that the decision at the end of the second Test against the British and Irish Lions contravened the sport's player welfare drive.
The officials decided not to overturn Hugo Keenan's match-winning try after reviewing a clearout in the build-up from flanker Jac Morgan as the Lions edged a compelling contest at the MCG.
Morgan joined the back of a ruck near the 5m line and collided into Australia's Carlo Tizzano who lurched backwards in pain, claiming he had been struck on the back of the neck as he tried to lift the ball.
After the ball was worked out to the left for Keenan to score, the television match official (TMO) checked the clearout and agreed with referee Andrea Piardi's initial decision to award the try.
