Arsenal didn’t play particularly well against Atalanta in their Champions League opener, but one of their players still managed to break a record. The Gunners looked lost in the final third in Martin Odegaard’s absence, and they just couldn’t create as many chances as they would’ve liked. However, Arsenal were once again solid defensively, and David Raya’s ‘unbelievable’ performance in goal forced Atalanta to settle for a draw. Mikel Arteta had six academy players on the bench on Thursday night. One of them has made his way into the history books. Arsenal’s Jack Porter breaks UEFA Champions Le…