Arsenal conceded five goals for the first time at their Emirates Stadium as they suffered their worst home defeat for 19 years.
Arsenal moved up among the pace-setters in the EPL when they beat Portsmouth 3-1 at home.
Arsene Wenger said he was taking plenty of positives from his team's 0-0 draw with European champions AC Milan.
Arsenal opened a five-point gap at the top of the English Premier League after beating Blackburn Rovers 2-0.
Arsenal needed a late equaliser from Theo Walcott to salvage a 1-1 draw against arch-rivals Tottenham Hotspur in the League Cup semi-final.
Brazilian midfielder Gilberto converted a penalty in each half as Arsenal trounced Tottenham Hotspur 3-0.
The result took Arsenal on to 40 points from 17 games, one ahead of Manchester United, who briefly went top earlier in the day after winning 1-0 at Liverpool.
IMAGES from EPL matches played on Wednesday
Frank Lampard capped a great week for himself and Chelsea when he opened the scoring in a 2-0 win at Wigan Athletic on Saturday as the Londoners gained ground on Premier League leaders Arsenal and Manchester United.
Arsenal stay top with 27 points from 11 matches; United remain second on 27 from 12. It was Arsenal's 25th match in all competitions without defeat, a club record.
Written off before the start of the season, the Gunners can clock up a 10th consecutive victory in all competitions when they welcome Roy Keane's Sunderland to the Emirates Stadium on Sunday.
Sevilla look set for a baptism of fire when they make their Champions League debut at Arsenal on Wednesday.
Alexis Sanchez has said he is very happy at Arsenal but the Chile winger has put the onus on the north London club to put an end to the protracted contract negotiations to keep him at the Emirates Stadium.
Wigan Athletic manager Paul Jewell was charged with improper conduct by the Football Association (FA) on Tuesday for his behaviour towards referee Phil Dowd after Sunday's 2-1 defeat at Arsenal.
Aston Villa will be the first league visitors to Arsenal's new Emirates Stadium on the opening day of the Premier League.
Dutch striker Robin van Persie scored a superb late goal to give Arsenal a 2-1 win over Italian champions Inter Milan and victory in the pre-season Emirates Cup tournament on Sunday.
Manchester United kept up the positive momentum of their pre-season tour with a 3-1 victory over Barcelona in the International Champions Cup on Saturday in Santa Clara, California.
Arsene Wenger has "no doubt" he will still be the manager of Arsenal next season despite pressure from the club's supporters to end his 20-year stay with the north London side. A run of just two wins from their last nine games in all competitions has seen the Gunners knocked out of the Champions League last-16 for a sixth successive season and exit the FA Cup in the quarter-final, losing to Watford at the Emirates Stadium. Arsenal's dismal form has severely dented their hopes of ending their 12-year wait for the Premier League title, as they trail leaders Leicester City by 11 points with a game in hand.
Aston Villa returned to winning ways in stunning fashion as Ollie Watkins scored twice in a 3-0 away thumping of an abject Arsenal in drizzly north London on Sunday.
In an Instagram post by Esha, Iwobi was called 'gorilla'.
The victory kept Arsenal in the race for the fourth Champions League place from the EPL.
The match will be played at Arsenal's new Emirates Stadium on September 2.
Arsenal had to come from behind to snatch a 2-1 win over Wigan Athletic and reclaim fourth place in the Premier League from Bolton Wanderers on Sunday.
Substitute forward Simao Sabrosa and central defender Ricardo Carvalho scored in the friendly international at the Emirates Stadium on Tuesday.
The Barcelona playmaker, who has started only once in five internationals since Dunga replaced Carlos Alberto Parreira as Brazil coach in August, is suffering from a calf muscle problem.
Arsenal had to come from behind to snatch a 1-1 draw against bogey team Bolton Wanderers as champions Chelsea cruised into the FA Cup fifth round with a 3-0 win over third division Nottingham Forest on Sunday.
Arsenal manager Arsene Wenger believes their 3-1 victory over Hamburg SV in Europe will put an end to a costly Premier League jinx at their new Emirates Stadium.
The easy victory enabled the South Americans complete a successful London tour.
Reading enjoyed a memorable first taste of the top flight when they beat Middlesbrough 3-2.
Arsenal suffered a shock Europa League exit to Olympiakos Piraeus on away goals after a 2-1 extra-time home defeat, while Manchester United and Wolverhampton Wanderers cruised into the last 16 with emphatic aggregate wins on Thursday.
Manuel Pellegrini berated referee Mark Clattenburg and said his performance cost Manchester City victory after a breathless 2-2 draw against Arsenal at the Emirates Stadium.
Arsenal's game against Wigan Athletic on Sunday will be their 2,010th and last at Highbury
Arsenal manager Arsene Wenger was sad and frustrated after missing out on the Europa League final following Thursday's 1-0 defeat at Atletico Madrid in his last European game in charge of the London club.
Images from the EPL matches played on Sunday
Arsenal moved top of the Premier League with a 3-1 defeat of StokeCity with in-form midfielder Aaron Ramsey again providing the spark on Sunday.
IMAGES from Europa League matches played on Thursday.