Calum Chambers scored with his first touch after coming on as a substitute to help Arsenal secure a 2-0 victory over Leeds in the fourth round of the Carabao Cup.
Chambers made an instant impact Just 23 seconds after replacing Ben White - who Arsenal boss Mikel Arteta revealed after the game had been struggling with illness - heading Nicolas Pepe's knockback inches over the goal line despite the best efforts of goalkeeper Illan Meslier.
The Gunners made the game safe when former Leeds loanee Eddie Nketiah pounced on Liam Cooper's poor defensive header before lifting the ball over the onrushing Meslier.
Nketiah, who made just two league starts in 17 appearances for Leeds during the 2019/20 season before having his loan spell cut short at Elland Road, almost fluffed his lines in front of an open goal, but his scuffed shot found the net to seal Arsenal's spot in the quarter-finals.
The Gunners, who extend their unbeaten run in all competitions to eight games, will now wait to see who they will face in the last eight when the draw is made from 10.30am, on Saturday.
Arsenal are back in Premier League action on Saturday when they face a trip to Leicester City; kick-off 12.30pm, while, Leeds next assignment is also in the Premier League against Norwich City at Carrow Road; kick-off 2pm.
