Brentford secured their passage to the EFL Cup quarter-finals with an away victory over Stoke City on Wednesday.
Sergi Canos gave the Bees a lead in the first half, and Ivan Toney strengthened their position with a second before half time.
Romaine Sawyers, who made 135 appearances for Brentford between 2016 and 2019, then pulled a goal back for the hosts on the hour mark, but Thomas Frank's men held on for a 2-1 win.
They now head into the final eight, having previously defeated fourth-tier Oldham Athletic 7-0 thanks to four goals from Marcus Forss, a brace from new signing Yoane Wissa and a Raphael Diarra own goal.
Frank's men go into Saturday's quarter-final draw alongside fellow Premier League sides Arsenal, Chelsea, Leicester City, Liverpool, Tottenham Hotspur and West Ham United as well as League One outfit Sunderland.
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