QPR manager Steve McClaren told his players they are now involved in a relegation battle after losing 2-1 at home to Rotherham.
Semi Ajayi’s header deep into injury time gave third-from-bottom United their first away league win of the season.
It also dragged Rangers into trouble – McClaren’s side are now just seven points above the relegation zone.
Ajayi opened the scoring with 20 minutes remaining and struck again in the final seconds after Bright Osayi-Samuel’s 85th-minute equaliser appeared to have rescued a point for the hosts.
A recent win against Leeds aside, Rangers have struggled badly since the turn of the year and this was their ninth defeat in 11 Championship matches.
“We’ve said to the players that we’re looking over our shoulder and need to pick up points,” said McClaren.
“We can see the 50-point mark and we need to get three wins very quick.
“The target has always been 50 points as quick as possible. After Leeds we said ‘let’s kick on and get them’ and we haven’t. We’ve collected one point.
“Since the Leeds game, which was only a couple of weeks ago, we’ve been poor.
“We should have kicked on. Instead, we’ve not. We now need to find the solution.
“We have no excuses. We thought we rescued a point but we were poor tonight.
“Overall we had players not playing at the level and that’s our responsibility.
“We’ve had some highs this season and some good results – only two weeks ago – and incredible lows, and tonight is another one of them.
“It’s about how you react. We have to show character and we’re not making excuses.”
McClaren admitted the return of Geoff Cameron and Angel Rangel cannot come soon enough.
Cameron, out since December with an ankle injury, was among the substitutes, while Rangel is on course to return after the international break following a thigh problem.
“We have missed them and need them back, but we should still have enough out there,” McClaren said.