FILE - In this Oct. 11, 2019,file photo, Australia's Kurtley Beale, center, is assisted from the field after suffering a head injury during the Rugby World Cup Pool D game at Shizuoka Stadium Ecopa between Australia and Georgia in Shizuoka, Japan. A "shadow trial" of advanced eye-tracking technology will be conducted in the Trans-Tasman Super Rugby tournament in Australia and New Zealand as part of World Rugby's bid to tackle head injuries by improving the detection of concussion. (AP Photo/Christophe Ena, File)

FILE - In this Oct. 9, 2019, file photo, Wales' Dan Biggar is assisted after he was injured during the Rugby World Cup Pool D game at Oita Stadium between Wales and Fiji in Oita, Japan. A "shadow trial" of advanced eye-tracking technology will be conducted in the Trans-Tasman Super Rugby tournament in Australia and New Zealand as part of World Rugby's bid to tackle head injuries by improving the detection of concussion. (AP Photo/Aaron Favila, File)