England,UK: Arsenal was dumped out of FA Cup third-round by managerless Championship side Nottingham Forest on sunday.
The hosts took the lead through a header from Eric Lichaj.
However, the lead lasted just three minutes as Per Mertesacker followed up after Rob Holding’s header had struck the post.
Lichaj reclaimed the lead for a Forest side led by caretaker boss Gary Brazil, the American defender scoring a spectacular dipping volley from the edge of the area a minute before half-time.
Forest pulled further clear in the second half when Ben Brereton sent David Ospina the wrong way from the penalty spot after Holding upended Matty Cash.
Danny Welbeck reduced the deficit for Wenger’s much-changed side after Forest goalkeeper Jordan Smith failed to hold a through-ball.
Additional reporting courtesy of bbc sports