Redknapp's men dominated proceedings at Loftus Road but failed to get on the scoresheet and eventually went down to ex-Spurs man Adel Taarabt's first-half free-kick.

Newcastle's 3-0 win over Stoke allowed them to leapfrog the north London outfit into fourth place and Spurs are now just one point ahead of sixth-placed Chelsea.

"I'm obviously concerned," Redknapp said.

"I was disappointed last week at Wembley (following a 5-1 defeat to Chelsea) but before that I've only seen one bad performance and that was against Norwich.

"Other than that I couldn't sit here and say we've been playing badly - we haven't. We didn't play badly today, we've come here, had the whole game but just couldn't get a break.

"So, I'm not worried about the way we're playing. Sometimes you get the breaks."

The Englishman believes his side did not deserve to lose given their dominance in terms of possession and chances.

"I thought it was harsh," said Redknapp.

"It wasn't a great free-kick either, it somehow found its way into the goal. I'm not one to make excuses. We had enough of the ball and enough chances, it was all one-way traffic.

"They made it difficult and got bodies in the way."

With Emmanuel Adebayor failing to recover from a hamstring problem and Louis Saha failing a late fitness test, Redknapp was forced to start with Jermain Defoe up front.

And the 65-year-old felt that a lack of presence in the box contributed to his side's inability to make their possession count.

"We were tiny, a tiny little team," Redknapp said.

"If you looked at us up front we had no size about us. We had no-one who was going to get on the end of crosses, it was a problem for us."

However, with just four games remaining this season, Redknapp feels his team are still in the driving seat in terms of qualification for next season's Champions League.

"There's four games to go and I'm sure we are capable of winning them all," said Redknapp.

"I'm very confident we can still get top four. I can't see Chelsea losing too many, they look very strong.

"Newcastle are going well but they've got to play Chelsea and I don't think they'll both win that one. It's all to play for. If we win our games then it doesn't matter really, It's up to us now.

"It's not going to be easy, we're fighting for our lives. We're fighting for Champions League football."

Meanwhile, QPR boss Mark Hughes said his team avoided a 'travesty' by clinging on with 10 men to beat Spurs.

Rangers have now won four consecutive matches on home soil and are three points clear of the drop zone with three games to play and Hughes believes his side are peaking at the right time.

"It was a fantastic performance from ourselves," Hughes said. "We worked really hard to stop them creating anything and given the talent they have, you would expect them to have regular efforts on goal but that didn't happen.

"On occasions you ride your luck but it would have been a travesty if we didn't get anything out of that game."

QPR face a difficult run-in with trip to Chelsea and Manchester City looking particularly daunting assignments, but with confidence sky-high Hghes believe survival is within reach.

"We've got three games left, three very difficult ones. We've got one here (versus Stoke) and we can't allow ourselves to think that's a given," he said.

"We must try and address our away form. If we can be disciplined against Chelsea next week then we'll try and get a positive result.

"It'll be massive for us if we get something positive from the derby game with Chelsea."