Mackay was pleased with his side's performance as they backed up their win over Manchester City with another valuable point.
He said: "We played a top team who finished sixth last season, and I reinforced to the players we could not make it a case of after the Lord Mayor's show as we would have been turned over.
"But we were at it, they were at it, and it was two teams matching each other stride for stride."
He added: "It takes huge concentration levels to keep getting in defensive positions and to have the calm needed when you have counter-attacking opportunities, and four points after three games is a very good start for us."
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