The defender played a full 90 minutes on the night of his milestone birthday as the Gunners easily beat Nottingham Forest 4-0 in the third round of the EFL Cup.
It has been a big few months for Holding, who joined Arsenal from Bolton Wanderers in the summer, and he was thrilled to contribute to an impressive victory with another assured performance in central defence.
Great way to celebrate my 21st! Thanks for all the birthday wishes
— Rob Holding (@RobHolding95) September 20, 2016