Wane Rooney fired United back to the top of the table when he struck in the first half, but Evens believes that the official, Michael Oliver could well have pointed to the penalty spot after a foul by Michael Carrick in the United penalty area.
Evans didn't disagree when asked about the incident in an interview after the game, and he said that he feared the worst when Murphy went down.
He said: "You have a quick look towards the referee, but he's waved it away. I haven't seen it back again but he could have given the penalty."