Britain Rugby Union - Scotland v Italy - Six Nations Championship - BT Murrayfield Stadium, Edinburgh, Scotland - 18/3/17 Scotland's Alex Dunbar in action Action Images via Reuters / Lee Smith Livepic
EDINBURGH (Reuters) - Alex Dunbar has failed concussion tests and will be replaced by Peter Horne at centre in Scotland's team to face Australia at Murrayfield on Saturday.
"He failed to meet the requirements of the graduated return to play protocol for the concussion he sustained against New Zealand last weekend," a Scottish Rugby statement said on Friday.
