Scotland lock Richie Gray was concussed during yesterday’s EMC Test against South Africa at Murrayfield.Gray, who was winning his 26th cap, was injured during the game’s first-half.Scotland doctor James Robson said: “Richie will now be subject to the return to play protocol following a concussive episode. We have been in contact with his club medical team at Sale Sharks to discuss the management of his injury.”At this stage there is no other injury concern from those involved yesterday for Saturday’s EMC Test against Tonga at Pittodrie Stadium in Aberdeen.Dr Robson added: “Alasdair Strokosch is continuing his rehabilitation with us following the calf strain he sustained in training last week.”