Work to do on smart mouthguards - Townsend

Work to do on smart mouthguards - Townsend https://ift.tt/sG5qghn https://ift.tt/yZSzG0t Scotland head coach Gregor Townsend says "more work" is required to make smart mouthguards "correct" after an alert prompted the temporary withdrawal of prop Zander Ferguson against England.