The Liverpool left-back was at the heart of the action on Monday night as his failed clearance gifted Alexandre Lacazette and Arsenal the opening goal midway through the first half at Anfield.
Sadio Mane equalised just three minutes on from Lacazette’s strike before Robertson made amends for his earlier mistake, beating Bernd Leno from close range to put the champions in front for the first time in the game.
Liverpool summer signing Diogo Jota came off the bench and scored a debut goal at the death to help maintain the club’s 100 per cent record in the top flight this season.
Arsenal had got the better of Liverpool in their previous two meetings and Robertson felt his side were ‘worthy winners’ this time around for the way they reacted to going behind on Merseyside.
But the Scot made sure to credit Arteta for the progress and signings the Gunners have made since he took charge last December.
‘Since Arteta’s come in he’s turned the club around and fair play to him,’ Robertson told beIN SPORTS shortly after the final whistle.
‘He’s made some good signings and they look like a good team so we knew it was going to be a tough test.
‘Both of us had 100 per cent records going into this game and they’ve got the beating of us the last two times so we wanted to get the three points.
‘Nobody comes here and gets it easy and luckily we showed that today.
‘It was a tough game but I think we were definitely worthy winners.
‘If we were a bit more clinical, we might have got a couple more goals.’
‘There was still a long time to go and we started the game well, creating chances, so we didn’t let it affect us and that’s a sign of a good team.
‘We showed that and, once we got in front, I don’t think we gave them many chances. It’s looks like a couple, with the flag going up a bit late and then maybe it looks like that.’
Arsenal will be seeking revenge on Thursday evening when they return to Anfield to take on Liverpool in the Carabao Cup fourth round.