"All referees enter into matches hoping not to make any mistakes but understanding that they may happen, what none of us want is for any mistake to potentially affect the result of the match," said a contrite Styles.
"Yesterday, in mistakenly awarding a penalty, I accept that I may have affected the result of the match and for that I apologise."
"I spoke to Rob this morning and obviously he is extremely disappointed with the decision and admitted he got it wrong," added Keith Hackett, general manager of Professional Game Match Officials Limited.
I have left a message with Rafael Benitez to apologise. Having looked at a video and seen a better angle and a better view, clearly he [Styles] now recognises that he got it wrong and he's deeply apologetic for that."