The loss offers the Gunners a setback in their quest to secure a return to next season's Champions League.
Emery's men have also lost their last three Premier League away games and have not recorded a win on the road since beating Bournemouth in November previous year.
Emery's side head to Huddersfield confident they can use the Premier League's bottom club as a cure for travel sickness that has seen them fail to win outside the Emirates Stadium in that competition since November 25. "For us as well, away games have been a challenge and each match is a new challenge". The team have lost four and drawn two of their past six Premier League away games to slip to sixth in the table and the manager knows the rot has to stop at Huddersfield on Saturday.
"One month ago we were in the same situation but it's not easy".
"This week he worked Monday with our coaches and also yesterday".
Wall out 12 months after rupturing Achilles in slipping accident at home
Ironically, Wall had said that one reason he elected to have the season-ending heel surgery was to avoid suffering a worse injury. Douoguih estimated the recovery range for Wall's injury, "at John's age", to be from 11 to 15 months.
Campbell told talkSPORT: "I think Unai Emery has done a really good job so far". The first is to think we need to win and after it's how we can win this match - (in terms of) preparing tactically and individually'. We started very well away, changing our mentality to get more points away.
"We can have better balance [in performances] when we prepare by thinking it's going to be very hard", Emery said.
On Arsenal's recent struggles, Emery said on Thursday: 'It can be... at the end, the reason we didn't take the same balance as we have shown at home.
"Today he is working with different adaptation and better than last week".
"Each match is also a very big opportunity for us to fight for the possibility to take three points and continue better than how we are doing in away games now".