You can usually tell the difference between a top player and good players – it often comes down to composure and decision making.
Christian Pulisic has several chances to slash at this and it would be a low percentage shot if he took it on, but he shows composure and skill to bring it down, take a few touches and eventually he leaves the keeper with no chance:
Pictures from RMC Sport
There’s no way that Liverpool’s evening will be ruined when they are given the trophy, but surrendering a three goal lead would be a sore one to take.