'It was a bad day, sometimes it happens,' said Guardiola
Pep Guardiola called on the home supporters to give his players their full support
While Pep Guardiola has brought two Premier League titles, smashed records and produced some of the most glorious football the club's fans have ever seen -- European success remains elusive to his team.
Chelsea's American forward Christian Pulisic scored his first Premier League goals for the club with a hat-trick and Willian added another in an entertaining 4-2 win at Burnley.
Manchester City now need, at most, 11 points from their remaining seven matches to secure their third Premier League title in four seasons.
Summary of all that transpired on and off the football field
The dazzling Lionel Messi returned from illness to score yet another double to help Barcelona ease into the knockout stages of the Champions League for a 13th successive year with their 2-0 win at Celtic on Wednesday.
Brazilian Fernandinho's second-half equaliser earned Shakhtar Donetsk a 1-1 draw with Dynamo Kiev in the first leg of their UEFA Cup semi-final in Ukraine's capital on Thursday. Shakhtar's Olexandr Kucher will miss the second leg next week through suspension after being booked midway through the second half.
Whether that unusual arrangement had any influence on untypical performance from City, who lacked zip and inspiration as they struggled to break down the French side, is a matter of pure guesswork and Arteta wasn't in the mood to be drawn on it.
Images from Saturday's action in the Premier League.
Arsene Wenger's final match at Old Trafford as Arsenal manager ended in defeat with a stoppage time header from substitute Marouane Fellaini earning the points for second-placed Manchester United.
A summary of Sunday's Premier League matches
Wolfsburg shock Real Madrid 2-0 to crown big European night.
Manchester City reached the League Cup final after recovering from a shaky start as Sergio Aguero's brilliant header sealed a 3-1 win over Everton in the semi-final second leg to clinch a 4-3 aggregate victory.
Watford climbed into the top four of the Premier League after Tom Cleverley's 92nd-minute goal gave them a 2-1 victory over Arsenal at Vicarage Road on Saturday.
Manchester City manager Pep Guardiola congratulated local rivals Manchester United on securing the services of striker Alexis Sanchez from Arsenal even though the Chilean international has not formally completed his transfer.
Liverpool boss Juergen Klopp has beaten Manchester United only twice in his career and never at Old Trafford -- his worst record against any Premier League side.
Red-hot striker Neymar helped fire Brazil into a World Cup second-round meeting with Chile when he scored twice in the first half as the hosts survived an early scare against already-eliminated Cameroon to win 4-1 and top Group A on Monday.
Later on Monday, West Bromwich Albion and Watford were also charged for failing to control their players in Saturday's league game at the Hawthorns, which the hosts won 3-1
Luka Modric pulled one back for Zinedine Zidane's shellshocked side with a brilliant strike from distance early in the second half before substitute Vinicius Jr reduced the deficit to one goal.
Liverpool face Spurs in the game of the weekend, a day after title rivals Manchester City travel to struggling Fulham.
While the signing of a hard-working player who won two Premier League titles at City in five years since joining from Aston Villa is a coup for Liverpool, it also signifies the start of a squad makeover at City.
Manchester City returned to the top of the Premier League on goal difference after coming from behind to draw 1-1 with Southampton at the Etihad Stadium on Sunday.
Manager Pep Guardiola tempered his delight at ManchesterCity's ability to fight back three times in a thrilling 3-3 draw against Celtic in the Champions League on Wednesday by urging his players to understand the importance of a good start.
Manchester City tightened their stranglehold at the top of the Premier League on Wednesday by trouncing bottom club West Bromwich Albion 3-0 as nearest rivals Manchester United suffered a chastening 2-0 defeat at Tottenham Hotspur.
France meet Belgium in a World Cup semi-final on Tuesday. Here is a look at some of the key head-to-head duels which could prove decisive.
Brazil coach Tite felt a terrible bitterness after they were knocked out of the World Cup by Belgium in the quarter-finals on Friday and said his side never got the breaks in an enthralling end-to-end contest.
Chelsea may still take their case to the Court of Arbitration for Sport, as other clubs have done in the past.
Images from the UEFA Champions League matches played on Tuesday.
The improvement since Tite took over as coach in June 2016 has been remarkable and Brazil are now joint favourites to win a record sixth World Cup.
Manchester City's quadruple bid remained intact as Ilkay Gundogan and Kevin de Bruyne secured a 2-0 win at Everton in their FA Cup quarter-final clash
Champions Manchester City have won their last 10 home league matches scoring a total of 36 goals.
News of all that's transpired on and off the football field
Five talking points from the Premier League weekend:
Manchester City manager Pep Guardiola hopes his players return injury-free from the international break this month for a hectic run of fixtures that could define the Premier League champions' season.
Manchester City's barnstorming start to the English soccer season, producing five straight wins, is in danger of becoming a fading memory after consecutive defeats by West Ham United and Tottenham Hotspur allowed Manchester United to knock them off the top of the table.
It was not so much the maths, though Liverpool's nine-point advantage over defending champions City, with one point less over Leicester City and Chelsea, is a significant gap, especially as Juergen Klopp's side have lost one league game in 18 months.
IMAGES from the English Premier League matches played on Saturday.
Manchester City maintained their perfect start to the season with a 2-0 victory over promoted Watford as champions Chelsea suffered a shock 2-1 home defeat by Crystal Palace on Saturday.
'By giving cameras unimpeded access to their world-class training facilities and coaches, and by showing off Guardiola's genius, All Or Nothing is a striking show of power, a declaration of their conviction of being the bigger club in Manchester,' says Dhruv Munjal.