Aaron Ramsdale returned to the Arsenal starting line-up as Reiss Nelson’s goal sent the Gunners into the Carabao Cup fourth round at Brentford’s expense.
Mikel Arteta has opted to start David Raya ahead of Ramsdale in the last three games.
But the England international caught the eye on his return with a crucial second-half save from Yoane Wissa.
Nelson struck what proved to be the winner after just eight minutes, firing in after a poor backpass.
Arsenal will travel to Premier League rivals West Ham United in the week commencing 30 October for a place in the quarter-finals.