Postecoglou said: "Had a little bit of everything. We started the game well enough apart. I thought we lost our way towards the back end of this first half. Second half we were really dominant against a team that is pretty desperate and fighting for everything.
"It's something we've been working on with the guys. Micky can strike a ball and Pedro certainly can. It just needs a bit of composure. Micky's was outstanding.
"We needed some energy. Three games in a week. I have the luxury of now having a squad so why not utilise it. We've got a tough run-in and we're going to need to whole squad."
On the fact they will now play the top three, he added: "I couldn't care less about that (who wins the title). We're in there scrapping for ourselves. We want to finish the team strong."