Arsenal beat the Championship side 3-1, but it was nonetheless a memorable night for the Brentford captain, who was a member of the Arsenal academy in his youth.
Back in 2000, he accompanied Tony Adams on to the Highbury pitch for Arsenal's match with Coventry City as a mascot.
Yennaris was at the North London club for 15 years, and even played in the same U8s team as Harry Kane.
However, after joining Brentford to enjoy more first-team action, he has played over 130 times for the Bees.
The photo, tweeted by Arsenal photographer Stuart MacFarlane, also shows that Mike Dean refereed both matches.
27 September 2018