Latics midfielder James Wesolowski believed he should have been given a penalty which would have given Latics a good chance of victory.
The Australian felt he was clipped in the area as he raced through on goal in the last ten minutes of the game but the referee waved away the protests to the dismay of Wesolowski.
He said: "It was a penalty. I went for a shot and he's caught me but the referee's not given it. I thought some of the referee's decisions were questionable but that's football and you have to move on. We put in a good performance but that's four unbeaten now so that is good form to keep us in this division."
Latics more than held their own against second-placed Brentford and the former Peterborough man was disappointed not to get the victory which he felt they deserved.
"They are a good team but I thought we more than matched them. We are disappointed we didn't get the three points but come the end of the season, it might be an important point so we've got to take the positives," admitted the 26-year-old.
"We've got a run of games now which are all winnable so it's in our hands. We've got to stay positive and make sure we keep doing the right things."
With the end of the season approaching, the midfielder believes the next six games are massive to staying in the division.
"We've got to make sure we take it game-by-game, play the football we have been doing for the last four games because that's like the stuff we know we're capable of," Wesolowski added.