The centre-back was at fault in the second half when his misplaced pass was intercepted by Gerard Deulofeu who diverted it into the path of Tom Cleverley.
Watford went on to equalise from the spot through Roberto Pereyra after the Argentinian was tripped in the box by Sokratis central defensive partner David Luiz.
However, the Greek feels that tossing away a two-goal advantage was down to him and has taken responsibility for it on Twitter.
Sokratis tweeted: Todays result is not good for us. I feel responsible for this result, so I would like to apologise to all of you. I dont like to hide, and I will keep working hard in order to achieve our goals.
Todays result is not good for us. I feel responsible for this result, so I would like to apologise to all of you. I dont like to hide, and I will keep working hard in order to achieve our goals. pic.twitter.com/to7IOViTcS
— Sokratis Papastathopoulos (@SokratisPapa5) September 15, 2019
The Gunners have not kept a clean sheet since the first game of the season when they beat Newcastle 1-0 at St James Park and are now without a win in three matches.
Only four teams have conceded more goals than Arsenal so far this campaign as Unai Emery looks to improve their leaky defence.
After the calamitous displays of Sokratis and Luiz at Vicarage Road, Arsenal fans are looking for the return of a number of injured defenders.
There is positive news about all four currently sidelined defenders at Read More – Source