He said: “I thought Petrov was imperious. He got the goal which gave him a big lift of confidence and then he proceeded to lord the midfield with a performance which was as good as I’ve seen from any Premiership midfield player this season.
“Petrov was outstanding. It was great to see Stiliyan get his first goal for us. You could see immediately it was like a weight lifted off his shoulders.
“He was brilliant. Absolutely outstanding.”