This was a typical performance from a referee not in his best form.
After a difficult run of games for Bobby Madley, this Merseyside derby came at the wrong time for him.
Madley should have booked Mason Holgate in the first half for shoving Roberto Firmino.
After Firmino rushed back to confront the defender, Holgate was clearly incensed by something the Liverpool striker had said.
Madley was standing next to Holgate but still chose to consult with the fourth official.