Defender Christopher Samba has revealed he was ashamed by his performance in QPR's 4-1 defeat to Swansea a fortnight ago.
Samba was one of the high-profile names brought in by manager Harry Redknapp at the end of the transfer window to try and resurrect QPR's flagging fortunes.
While the Hoops kept a clean sheet in Samba's first game the heavy reverse at Swansea followed to leave them seven points adrift of safety ahead of this weekend's visit of leaders Manchester United.
The 28-year-old admitted he had been angered by his, and his team's performance at the Liberty Stadium, and revealed he had made his feelings know in the dressing-room afterwards.
"I have nothing to hide - I was very angry," he told http://www.qpr.co.uk.
"I said what I saw to the players.
"You shouldn't be ashamed of your performances but against Swansea, I was ashamed of both mine and the team's performance.
"There's nothing worse than feeling full of regret."
The one man to escape Samba's ire was striker Bobby Zamora.
Samba claimed that Zamora was the only QPR player who could hold his head up after he stepped off the substitutes' bench to score his fourth goal of the season.
"Bobby Zamora showed us what the Premier League is about when he came on," he said.
"I think more of the players should have his attitude - urgency that reflects we have 12 games left and must play every one like a cup final.
"We have to give everything."
Following the Swansea defeat QPR travelled to Dubai for some warm-weather training.
They returned to England earlier this week and with the focus now on the visit of United, Samba believes they can cause an upset.
Despite their lowly position QPR have held Manchester City and Chelsea to goalless draws at Loftus Road already this season.
"We all want to beat Manchester United," he said.
"We've worked hard for two weeks in the lead up to the game and we want to get a result.
"But whatever happens, we need to show great attitude and commitment on the pitch. We have quality, but we also have to show desire."