Jermaine Jenas' early tap-in was cancelled out by Simon Dawkins' equaliser but Rangers sealed a 2-1 win in the 63rd minute when the ball ended up in the back of the net as Clint Hill, Jenas and visiting defender Jake Buxton challenged for Faurlin's right-wing free-kick at the far post.
McClaren , who recently left a coaching role at Rangers to take over as Derby manager, added: "I know from working here with QPR's players that they're the best team in the league and will have no problems going up with the squad they've got.
"We stopped them playing and did everything well without the ball in the first half, but we could have been better with the ball.
"We caused them problems in the second half, swamped them and five minutes into extra time were still going strong and were unlucky not to get something.
"We've got a lot of things to work on but if we keep doing what we did here, with the same endeavour, we'll win more games than we lose.
"The results will take care of themselves if we work hard and play football. I couldn't wish for a better group to work with.
"This is all about the long term. It didn't work out for us today but most of the time it will."
- Sports & Recreation
- Jermaine Jenas