BBC Sport - Concussion: How Premiership rugby is tackling head injuries

How Premiership rugby is tackling concussion

BBC Sport's Patrick Gearey reports how the Premiership has become the first league in the world to introduce an instant video review system for potential concussion injuries.

The European Champions Cup starts on Friday with Glasgow against Leicester - there will be full commentary on 5 live Sports Extra from 7 and live text on the BBC Sport website.

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