The Premier League has returned after its incredibly short break, and the opening weekend has already treated supporters to twists and turns galore. There was a losing start for Jose Mourinho, his first taste of defeat in the first fixture of a new season, and Leeds pushed Liverpool heroically at Anfield.
Arsenal, with two more trophies added to their collection in recent months, hit the ground running at newly-promoted Fulham - but the mood is very different across London at West Ham.
Here, Sportsmail takes a close look at 10 things we learned from the opening fixtures in the top flight.
Liverpool were made to work hard to defeat newcomers Leeds as the Premier League returned
But Jose Mourinho was made to taste defeat on the opening day of a new term for the first time
CHELSEA CAN PUNISH LIVERPOOL'S SHAKY DEFENCE
Jurgen Klopp may have appeared calm on the exterior after Liverpool laboured to a narrow win over Leeds, but he will be fully aware that his team's defence have been thrust into the spotlight.
After conceding just 33 goals last season, Klopp may not have expected to be faced with a dilemma involving his back line.
The usually reliable pairing of Virgil van Dijk and Joe Gomez, coupled with the dynamic duo of Trent Alexander-Arnold and Andy Robertson, formed an almost impenetrable wall - but they were left horribly exposed at Anfield on Saturday.
Jurgen Klopp will be concerned about his side's defending after shipping three goals to Leeds
Patrick Bamford (L) capitalised on a poor touch from Virgil van Dijk to tuck in Leeds' second
It took the heroics of Mohamed Salah, and a Van Dijk header, to bail out the hosts after Jack Harrison, Patrick Bamford and Mateusz Klich netted for Leeds.
Liverpool have also shipped more than one goal against Red Bull Salzburg and Blackpool during pre-season, and were torn apart all too often by Arsenal in the Community Shield.
Up next? Frank Lampard's Chelsea buoyed by a £230million spending spree. Coming up against the likes of Timo Werner, Kai Havertz, and Christian Pulisic, it may be time to go back to the drawing board for Klopp and his defenders.
ARTETA'S ARSENAL ARE THE REAL DEAL
Arsenal will be confident and in good spirits heading into their clash with the champions. The Gunners swaggered to a comfortable 3-0 win against Fulham in their season opener, and have already clinched two trophies under the stewardship of their young head coach.
All the signs are certainly promising. Long gone are the days of stodgy build-up play and frustration from the stands during Unai Emery's tenure.
Arteta has introduced an incisive and flowing style of play, and honed it to the cusp of perfection, in a remarkably short space of time.
Arsenal kicked off the new campaign with a win against Fulham and had been in total control
Good results breed more self-belief, and each Arsenal player on the banks of the Thames carried that with them as they brushed aside the newcomers.
Willian bagged a hat-trick of assists on his debut, Gabriel Magalhaes was impenetrable on his Arsenal bow and Pierre-Emerick Aubameyang - who is edging closer to a new deal - found the net once again.
Arteta is gradually instilling a winning mentality not seen at the club for years. They club are still on the hunt for a new midfielder though, and will almost certainly be knocking on the door of the top four after this display.
WANTAWAY WILF WILL STAR FOR PALACE
Despite having clearly expressed his desire to leave Crystal Palace, Wilfried Zaha put an end to questions over whether his uncertain future would affect performances on the field at the weekend.
The 27-year-old was linked with moves to Everton and Arsenal last season, and during this summer, and Roy Hodgson has not pulled any punches when admitting that the issue has weighed on the player's mind.
There were no signs of that against Southampton, however. The Ivory Coast forward found himself unmarked inside the penalty area when he emphatically fired home from Andros Townsend's pinpoint delivery.
Wilfried Zaha put to rest questions over whether his wish to leave would affect him on the field
Crystal Palace beat Southampton with Zaha netting the only goal of the game at the far post
'He thinks it would be nice if a club did come in and pay that market price,' Hodgson explained after Palace's 1-0 win.
Despite the ongoing furore, Zaha is yet to be the subject of a concrete offer and will remain at the club as things stand.
Eberechi Eze may have been bought in from QPR to displace him, a shrewd master and apprentice manoeuvre at Palace, but Zaha will continue to lead from the fore even as speculation continues to whirl around him.
MOYES SET FOR MORE MISERY AFTER LIMP DEFEAT
David Moyes once again cut a forlorn figure after watching his West Ham team fall to an insipid defeat at home against Newcastle.
It is becoming an all too familiar sight for the club's disgruntled supporters.
The frustration began an hour before kick-off, when the team sheets were released on social media. Furious users vented their fury over Moyes' team selection, with Mark Noble's selection in the No 10 role and Sebastian Haller having to settle for a spot on the bench particularly criticised.
David Moyes cut a forlorn figure after his West Ham team limped to defeat against Newcastle
Jeff Hendrick and Callum Wilson had scored on their debuts to pile on the misery for the hosts
The full-time result, a 2-0 loss to Steve Bruce's men, further piled on the pressure. Moyes labelled his team's defending as 'weak' after Newcastle new boys Callum Wilson and Jeff Hendrick often threatened and eventually found the target.
It is becoming increasingly harder for Moyes to shake off the feeling of anger that has shrouded his club, both on and off the field. The performance would have been roundly jeered by supporters, had they been allowed inside the ground, and the board are under renewed fire.
Irked by the questionable decision to sell talented youngster Grady Diangana, fans are rapidly turning their apathy into scathing, red-hot anger. Time may already be running out for Moyes with clashes against the league's top teams just around the corner.
NEWCASTLE GOING SMOOTHLY UNDER THE RADAR
All the talk at Newcastle over the past couple of months has been whether the £300m Saudi-led takeover would go through.
The club recently confirmed the takeover had officially been rejected so it was back to the drawing board for the St James' Park outfit and time to let their football do the talking once again.sonos sonos One (Gen 2) - Voice Controlled Smart Speaker with Amazon Alexa Built-in