The game finished in a 1-1 draw as James McClean's second half goal equalised Corry Brown's opener for the visitors.
It was the Latics who finished the game brighter and Mackay is keen that his side take that momentum into the next game against Huddersfield at the DW Stadium.
“We certainly felt we were in it in the second half,” Mackay said. “We knew in the first-half that there wasn’t a lot in it and it was a great strike from their lad to put it in the corner.
“We had a couple of chances ourselves and Adam Forshaw had a double attempt in the first-half but other than those efforts I didn’t think there was too much between the teams.
“That was the message going out into the second-half and also that we needed to step it up just 10% or so and get more on the front foot and I think that showed.
“We got the goal, we looked as if we could go on and win it and we’ll take momentum from finishing the game as we did, the performance and looking hard to beat.
"Certainly as the game wore on we were a lot more dominant against a team that is settled as Gary [Bowyer] has had them together for a couple of years now.”
The Latics face Huddersfield at the DW Stadium next Saturday in a game that must represent a great opportunity to get a first win in four.