Last Updated: 04/05/13 7:24pm
Rough challenge from Walcott on Traore sees the QPR full-back withdrawn due to injury, and Fabio coming on, but Arsenal have survived the late flurry from the relegated neighbours to move to third on the table.
Off comes Rosicky and on comes Thomas Vermaelen, his influence on the match entirely meant to wind down the clock.
The Gunners just about poach the ball at the back and try to launch a counter-atcck, but they lose out.
Great technique from Remy as his strike from the left was goal-bound, had it not been for a full-length save from Szczesny to his left.
Townsend once more whips in a ball form the right that is cleared by the defence and Arsenal are by no means safe as the match edges to a close.
Townsend gets the better of Monreal yet again out on the right, but his delivery for Zamora ask way too much of the QPR hitman.
No luck from the set-piece for Arsenal in terms of creating a goalscoring chance inside the box, but they regain possession out wide and look to start pushing up again.
Jenas earns a booking for his late challenge on Rosicky as Zamora still argues with the referee that he was illegally brought down inside the box by Koscielny moments earlier.
QPR having to wether the storm as Arsenal throw everything but the kitchen sink at the goalmouth to try and force an opening for their second goal of the match.
Podolski finally steps up to take and fires it into the wall. Momebnts later and the striker has another crack at goal, this time from open play that is knocked into touch for a corner.
Frustrating period for the Gunners, despite the dominance on the ball, as they create forward momentum but no real clean-cut chances on goal.
Smart 'keeping from Green as he keeps his eye on the ball and steers Carzorla's attempt on goal away.
Ramsey fluffs the Gunners' latest attacking movement, but they do still earn a corner-kick from the left to create another chance.
Townsend delivers from the set-piece to the far post, but some good defending from Arsenal clears the danger.
Monreal picks up a yellow card for tugging at Townsend, who made mince-meat of the Gunners full-back down the right.
Szczesny does extremely well to adjust his save in mid-air to palm away Townsend's stinging effort from range.
Rosicky and Walcott again combine inside the box, only to lose the ball at the crucial stage of the movement.
Too easy for Arsenal at the moment as no one from QPR seem willing to make a tackle and the Gunners have all the time in the world to work the ball around.
Rosicky with a good tee-off for Walcott,, who is quick to chase but just not quick enough as Green gathers just in time.
Szczesny with an excellent finger-tip save to steer Townsend's delicious cross from the right away from Remy.
Podolski and Walcott look to combine after a strong ball up field, but the defence scrambles in the end.
I'm a huge Arsenal fan and after that early goal from Theo I predict that he'll get a second as well as Podolski adding one for an impressive 3-0 win, From Sam Burke
I'm an 8 year old huge gunners fan so going with 4-0 Arsenal with Podolski Cazorla and Walcott (2). Thomas Armitage
Arsenal will win 4-1 against QPR. The goal for QPR will be an offside goal but the referee will call it a goal. Clo
Wenger will likely have a word with his troops as they finish the first period up on the scoreboard, but down in ascendency against a R's side who really have nothing more to prove in the top-flight this season.
QPR's confidence is visible, but Remy will maybe need to reign in his exuberance after he is blown up for a stiff hand to fend off Monreal.
Not a bad attempt from Townsend as his left-footed curler from the dead-ball spot drifts just wide of goal.
Relentless attacking play from Redknapp's charges allows earns them a free-kick from a good area out in front.
Last five minutes of the first half and it been much of QPR in the ascendency as the first 45 minutes draws to a close.
Nacho Monreal having to work to contain Townsend out wide as the QPR man proves a breath of fresh air for Redknapp's men going forward today.
Swift attacking play takes Arsenal back up field, but Podolski hands over possession when he is penalised for accidently hand-balling inside the box.
The Gunners manage to clear the ball from the set-piece, but the Hoops look a far cry better on attack the last five minutes than they have for much of the game thus far.
Townsend doing well down the wide channels, this time form the left, as he delivers a decent cross from the left that ultimately earns his side a corner-kick.
Last-gasp defending from the Hoops allows them to clear their lines and hope the frontmen can chase down long balls from the back.
Rosicky feeds Walcott on the edge of the box and he turns sharply to shoot, his strike beating Green but not the near post.
QPR manage to clear the ball after a relentless passage of play form Arsenal, only for the north Londoners to regain the ball and come again.
The Gunners with the run of the show in the final third, Walcott once more trying to catch out Green with a flick at the near post.
Podolski, again, chases hard but the German striker is beaten to the ball by Green, the shot-stopper getting down low to the smother the ball.
QPR push up field strongly down the right flank, but there is no getting past Laurent Koscielny, who does well to intercept a loose pass.
Rosicky with a good ball forward for Walcott, but a boot from Clint Hill steers the ball away from the goalscorer and out of touch.
Nice interplay between Arteta, Tomas Rosicky and Sanit Carzorla, with even Bacary Sagna getting involved, keeps play just outside the 18-yard box for the visitors.
Loic Remy with a run forward and then looks for Andros Townsend, but his ball asked too much of the winger.
Arsenal commit men forward, but QPR's defensive lines are now set and ready to repel any attacking threat.
Wojciech Szczesny launches his goal-kick for Walcott to chase, but the ball has too much pace on it and bounces out of touch.
Long ball forward for Bobby Zamora to chase as the R's desperately look to make some forward momentum.
Ball threaded through for Lukas Podolski up front, but the cover defence gets across in time to clear.
Walcott looking strong on the ball as the England forward looks to take up the key forward role for Arsene Wenger's men.
Buoyed by their early opener, the Gunners push in numbers as they look to maintain pressure on the hosts.
Arteta stays down to recieve treatment which will probabaly allow QPR time to come to terms with the early setback.
GOAL! Twenty seconds in and Theo Walcott nets another quick-fire goal in successive weeks, drilling straight through Rob Green from close range after being put through by Mikel Arteta.
Feel free to e-mail your thoughts or predictions to email@example.com and we'll publish as many of them before - and during - the game as possible.
For QPR, Christopher Samba is ruled out due to a knee injury, and joins Shaun Wright-Phillips (ankle) and DJ Campbell (foot) on the absentee list for Harry Redknapp's men. Bobby Zamora, though, is back after he missed out against the Royals through suspension, along with Andros Townsend.
In team news for Arsenal, Olivier Giroud serves the second match of his three-game suspension, but Jack Wilshere is back - albeit off the bench, while Nacho Monreal makes the starting line-up.
QPR are rated at 7/1 to beat Arsenal today according to our friends at Sky Bet, while it is 7/2 for the match to end in a draw. The Gunners, though, are 2/5 to win outright. Theo Walcott is 4/1 to score first and 9/2 to secure a brace. Meanwhile, Tomas Rosicky is 9/2 to find the back of the net just before the final whistle.
QPR, meanwhile, are left with only pride to play for this season, with the R's having suffered relegation to the Championship following last Sunday's draw against Reading, a result which also sent the Royals back down to England's second division.
Arsenal are looking to climb to third in the Premier League standings, the Gunners occupying the final Champions League qualifying position of fourth following the 1-1 draw against champions-elect Manchester United last weekend, leaving Arsene Wenger's men one point behind Chelsea.