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3 hours ago
Flashing mouthguards are making their debut astatine nan Women's Rugby World Cup.
They flash reddish to bespeak that a subordinate requires a caput wounded assessment.
BBC Sport's Emma Middleton went to return a look astatine really nan exertion tin thief spot players who person suffered a concussion.
READ MORE: Flashing mouthguards to bespeak HIA astatine World Cup
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