Arsenal U18 coach Jack Wilshere was delighted with Brayden Clarke's debut in their 8-3 win against Crystal Palace.
The defender made his debut on Saturday having been signed from Wolves in the morning.
"Talk about personality and courage to play, the first time he trained with us was on Thursday," Wilshere explained afterwards.
He trained yesterday and played today 90 minutes. We weren't sure if he'd get through the game so I asked him around 60 minutes how he was and he said 'yeah I'm fine.'
"The way he understood our style after only two days is credit to him. He's very good technically, can manage the ball and look after the ball and I thought against Palace you've got to defend direct play and he did that really well."