Mikel Arteta's 'process' took another hit as Arsenal went crashing out of the FA Cup, with the Spaniard admitting Southampton taught his side a 'lesson' on Saturday.
The cup holders were booted out by a disciplined Saints display, after Gabriel deflected the ball under goalkeeper Bernd Leno and into his own net after 24 minutes.
The Gunners had built momentum with five wins from six games before the St Mary's clash, but Arteta was left frustrated by the manner of their FA Cup ejection.
Arsenal were dumped out of the FA Cup on Saturday with a poor 1-0 defeat to Southampton
'We're really sad to be out of the competition and disappointed about the way we lost the game, conceding from an area in which we cannot give the ball away,' Arteta said.