"But also we have three goalkeepers and Petr Cech is in good form", he added.
NAIJ.com earlier reported that Arsenal number one Petr Cech worked as a linesman after helping the Gunners to beat Newcastle at St James' Park earlier in the weekend.
Brentford (4-3-3): Daniels; Odubajo, Konsa, Jeanvier, Barbet; Yennaris, Mokotjo, Sawyers; Canos, O Watkins, A Judge.
Despite a decent display, Everton remain without a league win since the second week of the season and have not won a Premier League encounter at Arsenal since Andrei Kanchelskis scored the victor at Highbury in January 1996.
Arsenal kept their first clean sheet of the season and had 36-year-old Cech to thank for keeping the visitors at bay in the first half.
Against Everton, coach Unai Emery chose to bench French youngster Matteo Guendouzi, who has performed well so far this season, and handed Uruguayan Lucas Torreira, another summer arrival, his first starting for Arsenal in the English Premier League.
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"We were preparing in preseason with the young players and every player to give them a chance to show us their confidence and performance", Emery said.
Some English press have rated the Arsenal players after the victory and unsurprisingly handed the Nigerian a good rating despite not playing from the kick off. There were seasons where you felt like we were in with a shout but then through various circumstances it wasn't to be.
"But for me, the focus is only on the performance and each match, every training".
Torreira completely deserved to be given his first start of the season for Arsenal.
Arsenal are up to sixth place in the Premier League, a welcome sight after the gloom that followed their two-game losing streak at the start of Emery's reign.
Alexandre Lacazette fired Arsenal to a fourth successive Premier League win as the French forward's superb strike inspired a hard-fought 2-0 success against Everton on Sunday. "Winning is better I think to find this but I think we are on the way". We tried to go and press them as high as we could and they have got an bad lot of quality, and they broke the press a couple of times and had chances. Mesut Ozil surged away down the right flank and when the Arsenal midfielder's pass reached Ramsey, he flicked the ball to the offside Aubameyang.