QPR 1-2 Arsenal
Rangers gave as good as they got for the first hour - and a fine consolation strike from Charlie Austin was the least they deserved.
A pity then the last 30 minutes was nearly all Arsenal and Alexis Sanchez in particular as he turned on a master class in finishing.
Olivier Giroud latched on to a rebound in the box for 1-0, and it was all she wrote for spirited Rangers when Sanchez lashed home at the near post for a second and crucial goal.
The home side pushed and shoved with legs to spare, but as struggling sides will tell you - there's a big gulf between energy and excellence.
Early on, Rs offered fans hope they might carve out a point at least when Bobby Zamora muscled one defender out of the way to set up Austin only for the shot to go straight down the throat of David Ospina.
It was meant as a cross, but Matt Phillips put the cat among the Arsenal pigeons with a curler demanding the keeper went full length to parry with Nedum Onuoha just a beat behind.
Austin's quick turn and fizzing shot was paint coat from putting Rs ahead in the 37th minute. But the first sign of real Gunner class came when Santi Cazorla was on the end of a little give and go in the box to hook right-footed.
The shot lacked steam, but Rob Green needed to get down smartly to save.
As Rs ruled, they were struck a blow, or rather Onuoha was, when he went up for a header and only succeeded in getting nutted by team-mate Steven Caulker forcing him off a minute before the break.
The away side were out of the blocks quickly at the beginning of the second period. Tomas Rosicky skipped down the right. His centre was a toe end from being converted by Mesut Ozil.
Another Rs post shaver arrived just before the hour when Phillips let fly from distance to see the ball whistle a foot past the post.
Rosicky, again, popped up at the near post with a low effort comfortably saved by Green - but there was nothing the keeper could do about Giroud's goal.
Sub Sanchez weaved his way down the left, slipped the ball to Kieran Gibbs, whose attempted cross was half blocked by Clint Hill, only for the Frenchman to gobble up the rebound at the near post.
Twice in the space of two minutes, Green thwarted Sanchez: the first a parry down to his right; the second when the keeper stood tall and saved in a one-on-one on the edge of the box.
The second Arsenal goal was a testimony to how slick Sanchez is. The Chilean weaved intricate patterns just inside the box and with a centimetre spare smashed the ball past Green at his near post.
Austin was given far too much space with eight minutes left, and his right-foot shot on the edge of the box smacked the back of the net for his 15th of the season. They might not be enough.
Rs, 4-1-3-2: Green, Furlong, Onuoha (Hill 45), Caulker, Yun; Henry; Phillips, Sandro (Kranjcar 57), Hoilett; Zamora, Phillips; subs not used: McCarthy, Wright-Phillips, Isla, Vargas, Zarate
Att: 17,977 (1,808 away)