Since when Fabianski (gk), Jenkinson (rb), Vermealen (cb), Monreal (lb), Miyachi (rw/lw), Bendtner (st), Park JY (st) r Arsenal 1st XI?
Even Rosicky isnt regular starter if all players fit.
Those Ramsey n Wilshere wouldnt hv to start that match (benched, maybe) if all youngsters midfielder that supposed to play in COC werent out injured - Zelalem, Gnabry n Ox; and d like of Ozil n Giroud wont even make on d match list.
Starting 4 regular starter (Ramsey, Wilshere, Cazorla & Koscielny) out of 11 players, doesnt make d team as 1st string team or else u have to say Chelsea isnt d whole 2nd string as i dont see Mata, ur last season best performer, as a 2nd string player either. Look at tonite game, ur team lost d ground n conceded when he was subbed out.

lol..i dont came to troll but just wanna correct ur fellow chelsea statement.
still too early.

At 1 time it was 7 out of 11 but typical Wenger always subbed in players late when the match left less than 1/2 hrs to play, so its not much thing could do at 0-2 more than damage control. Thats y i believed manager had subbed out Ramsey for Park when he already thought that game is over n let the player rest n avoid unnecessary injury. Its end with 6 out of 11 actually. Even if its 6 or 7 out of 11, ur 2nd string is only by d name, the quality there is better than most teams in EPL. Those would definitely be d key player/star at other club, even if there r 2 Chelsea team in EPL, then i think Chelsea B would stay on top half group of d league.
Ur lose tonite isnt too bad. Its just 10th match, less than 1/4 of d league game. It what make the league so enjoyable to watch. If not it would just like watching La Liga where 2 clubs dominated.