Nacho Monreal and Danny Welbeck both produced performances to forget at Anderlecht in the Champions League, but there was one who was arguably even worse…
Emiliano Martinez - 7
Made two saves which helped keep the scoreline down before ultimately conceding to Andy Najar in the 71st minute. Seemed to handle the pressure of Champions League football reasonably well.
Calum Chambers - 6.5
Chambers was ineffective in the duel as he won three encounters but lost seven, however, he did complete one tackle and three clearances. He was more competent in the final third, where he assisted Kieran Gibbs.
Per Mertesacker - 6
Won 80% of his attempted duels and had a good authority over his penalty box.
Nacho Monreal - 4.5
Interestingly, Monreal actually won five tackles - the second highest of any Gunner - however, centre back is not his preferred position, he got an early yellow card and looked out of place.
Kieran Gibbs - 8
Recorded the most tackles of any Arsenal player - six - and even though he lost 13 duels, this was offset by the 12 that he won. Gibbs showed a striker's touch to volley home the equaliser.
Jack Wilshere - 4
Even though Wilshere was on the ball a lot, as his 88 touches will testify, he lost possession 20 times - the highest of any Arsenal player. He also returned the lowest passing accuracy - 79%.
Mathieu Flamini - 6
Mathieu Flamini is a reliable player when called upon but he is not the specialist enforcer Arsene Wenger needs in a 4-1-4-1 formation.
Aaron Ramsey - 6
Ramsey put together 96 touches on the football, the most of any Arsenal player, and also had a high passing accuracy - 91%. He struggled to assert any dominance, though.
Santi Cazorla - 5.5
Arsenal's final ball struggles were seemingly epitomised by Santi Cazorla, yet he did produce two key passes. The Spaniard, though, was dispossessed twice and lost possession 17 times. A mixed bag.
Alexis Sanchez - 8
One of Arsenal's more exciting players was one of the few red and white players on the pitch to try to make things happen. Came close with a free kick and tormented the Anderlecht defence on occasion. The Chilean produced four key passes - the most of any Arsenal player - and had a 95% passing accuracy.
Danny Welbeck - 4
Had just 39 touches on the football, three of which were unsuccessful - the worst ratio of any Arsenal player. He was dispossessed thrice and lost possession ten times. Welbeck was completely ineffective in Belgium.
Arsene Wenger - 2
Considering Arsenal have a team of a number of high-quality individuals, there is no excuse for an abject team performance - one of a number already this season.
By only having five or six recognised defenders in the summer, while enjoying an abundance of attack-minded midfielders, it was always clear Wenger had an un-balanced roster, yet he did little to remedy this and so the defensive injury crisis is one of his own creations. Monreal was poor at centre back, but it was not his position - it was one asked of him by the management.
Subs: Podolski - 7.5, Campbell - 6, Oxlade-Chamberlain - 5.5