Jeremy Guscott claims Liam Williams cheap elbow was 'dangerous'

Jeremy Guscott, appearing as a pundit for the BBC, echoed those calls, saying: "For me, he leads with the elbow.

"Another TMO with a few different angles and a bit more time... he doesn't get him in the face as far as I can see but he's led with the elbow which I think is dangerous.

"He could have quite easily got a yellow card and I don't think many people would have argued with it."

Jonathan Davies added: "He's lucky.

"If he catches him under the chin, it's another red card. Players have got to be careful now."

Former Scotland flanker John Barclay said: "The margins are so small.

"A couple of inches here or there and that's a red card. I don't think that's a card myself.

"So much chance comes into moments like that."