Arsenal failed to leapfrog Chelsea and Leicester into third position on the English Premier League table as a 1-0 victory shot Sheffield United into top ten.
With Mesut Ozil absent, Bukayo Saka, Aubameyang and Pepe knew they must combine well to get the result at the Bramall Lane.
The game got underway under the floodlight and Arsenal did not waste time to gain possession.
There was a penalty appeal after just seven minutes. Arsenal supporters in the office stood up in bemusement as John Egan tugs on the shirt of Sokratis but referee Mike Dean isn’t interested and chooses not to check with VAR.
In the 15th minute, Dean has ample reason to flash a yellow as Fleck scythes in late on Aubameyang. He makes no mistake, reaching for his pocket and displaying the card with aplomb.
Six minutes later, Arsenal would have gone a goal up, a rapid counter bringing a perfect delivery from the left from Kolasinac. Pepe is unmarked in front of goal but, swinging for the ball with his left foot when maybe he should wait for it to reach his wide, barely makes any contact and skews well wide for a bad miss.
Sheffield United took the lead on the half-hour mark from their seventh corner on the night. Oliver Norwood's deep cross is headed back across goal by Jack O'Connell and there’s Lys Mousset in acres of space to prod home from point-blank range.
Just before the half-time whistle, Bukayo Saka races into the penalty area and hits the deck under pressure from John Egan. Everyone’s expecting the referee to point to the spot but he’s booked the teenager instead.
Sheffield kept soaking the pressure in the second half as Arsenal continue the search for a breakthrough.
The home team would have been two goals up in the 63rd minute. David McGoldrick lays the ball off for John Fleck, but the Scot hammers a left-footed drive into the side-netting.
As the game approached it's final ten minutes, Sheffield United resulted in defending. They see out a couple of Arsenal corners with ease before Billy Sharp suckers Sokratis into a foul on the halfway line.
The tie ended with Sheffield claiming all three points up for grabs.