Garner went on to open the scoring with a brilliant individual strike after half an hour before securing all three points for Preston from the penalty spot 19 minutes from time.
"I'm not doing an Arsene Wenger, I just didn't see what happened. I couldn't see too much because there were bodies in the way and it's a big pitch," said Grayson. "I've not had chance yet to speak to Neil Kilkenny and we will look at the situation in the cold light of day.
"All I want to concentrate on is how proud I am of my players. We played for most of the game with 10 men on the biggest pitch in the league and the boys were fantastic.
"We were playing against a very good team and we had to defend with our lives. We've come out with a fantastic result.
"At half-time I asked them to put their bodies on the line and drain out every bit of energy they had. I told them what a buzz there would be in the dressing room if we could hold on and you can imagine how delighted we all are."
- Sports & Recreation
- Joe Garner
- Neil Kilkenny
- Arsene Wenger