Dominic Calvert-Lewin had an open goal, so there was no reason for him to dive. As he hurdled Trent Alexander-Arnold to get to the ball, the Liverpool full back lifted his head and created contact.
It was a penalty, but it was good to see common sense prevail and Alexander-Arnold avoid a red card.
The 22-year-old could have been dismissed for the denial of an obvious goalscoring opportunity with no attempt to play the ball, if referee Chris Kavanagh had followed the same principles which saw David Luiz shown red at Wolves.