The dramatic nature of the English Premiership League again surfaced on Saturday as Liverpool fell with another 2-0 defeat to Everton.
For Liverpool, it was the fourth consecutive home defeat in the Merseyside derby, which Manager Jurgen Klopp has never lost until now.
Richardson took a well-deserved first half goal before Sigurdisson got the second from the penalty spot.
The defeat means Liverpool slip to seventh position on the EPL log with top four finish losing increasingly impossible.