Massimo Luongo believes the red card shown to Jamie Mackie spoilt the game as QPR went down 1-0 losers to Preston at Deepdale.
Mackie was shown a straight red in the 22nd minute for an alleged stamp as he went in for the ball, but the Rs rallied and put in a valiant battle to keep things level until the 88th minute when Jordan Hugill scored the only goal of the game.
Despite their best efforts at causing the home side some problems, Luongo believes the sending off changed the game and made it comfortable for the hosts, something QPR didn't want to do heading into the game.
And the 25-year-old was disappointed that his side let their guard slip for one minute to concede and make it five games without a win for Ian Holloway's Hoops.
He said: "It's disappointing, the decision at the 20th mark changed the game, we come here and fancied ourselves and thought we could punish them.
"They hadn't had the best run and we thought we could expose them a bit, and once decision changed the game but we worked ever so hard to get something out of the game and we caused them some problems.
"I'm just so disappointed we let our guard slip a little bit for one minute and the next the ball is in the back of our net and all that hard work, we don't get anything from it.
"The sending off happened too quick, I'd have to look at it again but at the 20th minute mark you hope nothing happens like that to spoil the game, and if it was or wasn't I don't know, but it spoilt the game and made it a comfortable evening for them and we did our best to not make it comfortable.
"I think everyone did really well for 89 minutes and the goal came and it was a lack of concentration and the ball was in the back of our net, but that is what you get at this level."