Arteta risked his reserves against an always-dangerous Leeds and ultimately cruised into the last eight of the League Cup and extend the club’s unbeaten run to eight.
They have won six of those games too and the three-game losing start to the season is rapidly becoming a distant memory.
Second-half goals from Callum Chambers and Eddie Nketiah leave Leeds manager Marcelo Bielsa winless against Arsenal and facing a must-win match at Norwich on Sunday to stay above the relegation zone.
This was far from a cup classic, but Arsenal were efficient in every department while Leeds lacked sufficient quality to win this sort of match.
Only the names had been changed and Gabi Martinelli, making a rare start in attack, was one of nine fresh names from Friday’s side that beat Aston Villa here, and was overly keen to impress.
The Brazil forward was the focal point of Arsenal’s early attacks and was only denied an early goal by a heel of Leeds keeper Illan Meslier.
Leeds soaked up the pressure well and had good attacking outlets of their own in the form of fit-again Kalvin Phillips and Wales international Dan James.
Chelsea beat Southampton on penalties after a 1-1 draw at Stamford Bridge in the Carabao Cup on Tuesday night.
The home side were able to secure a 4-3 penalty shootout after an evenly balanced game over 90 minutes.
With neither side able to gain a lead after the allotted time the match went to penalties and Thomas Tuchel’s men prevailed.
However Che Adams scored quickly after the match restarted, pouncing on the rebound after former Tottenham defender Kyler Walker-Peters had a shot blocked.
There was plenty of attack play on show from both sides but neither could find a winner.
Southampton saw Theo Walcott miss, as did England international Mason Mount, before Will Smallbone shot over for the Saints, and Reece James secured the win from the spot.
Elsewhere, Sunderland won away at QPR on penalties after they played out a goalless draw at Loftus Road.