Arsenal's title hopes were dealt a blow as they were forced to settle for a draw against Brighton on Saturday.
With Bukayo Saka set for an extended spell on the sidelines teenage prospect Ethan Nwaneri was entrusted with just his second-ever Premier League start by Mikel Arteta.
The 17-year-old academy graduate quickly repaid his manager's faith by firing the Gunners into the lead after just 16 minutes.
Both sides made changes at the interval but it was Brighton who would seize the initiative in the second half, with referee Anthony Taylor pointing to the spot on the hour mark after Joao Pedro clashed heads with William Saliba.