With David Raya ineligible to take on his parent club, Ramsdale came in for his first top-flight start since the reverse fixture at the Gtech Community Stadium, where he kept a clean sheet in a 1-0 triumph.
The England international made a couple of errors which went unpunished in that November success, though, and he was guilty of another blunder in Saturday's affair, which Brentford would make him pay the price for.
After Declan Rice had headed Arsenal into the lead, Ramsdale dallied over a clearance in first-half injury time, allowing a sliding Yoane Wissa to charge him down and deflect the ball into the back of the net.
However, the 25-year-old made a pair of vital saves to keep the scores level in the second half, denying Ivan Toney's speculative effort and Nathan Collins's header with two full-length stops before Kai Havertz's 86th-minute header sent Arsenal to the summit of the Premier League table.
Ramsdale had a beaming smile etched across his face at full time, and Arteta — who will be expected to demote him back down to the bench for Tuesday's Champions League clash with Porto — waxed lyrical about his «courage» and «huge personality».
«Really happy, especially because he did exactly what he is, which is a person with a huge personality and courage, very determined,» arsenal.com quotes Arteta as saying in his post-match press conference.
«An error is part of football, it's hard to react about it, especially for the keepers because it's probably the most difficult position but he did it in an amazing way.
»I am not
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