Arsenal lost to Nottingham Forest in the FA Cup third round for the second time in four years thanks to Lewis Grabban's late strike.
The visitors were passive throughout and were deservedly beaten at the City Ground.
Mikel Arteta made numerous changes to his line-up but there was still a strong core to his team.
Bukayo Saka, Martin Odegaard and the in-form Gabriel Martinelli were among those in the side.
Forest, who beat the Gunners 4-2 at the same stage in 2018 and who have not lost a home tie in six years, were physical from the start.