The following are talking points from the Premier League weekend:
Manchester United continued their perfect start to the Premier League season by crushing Swansea City 4-0 with three late goals in four minutes.
"It's not much better at the moment. With Daniel's injury we have to take it day by day, and see if he's better," Klopp told a news conference on Friday.
"We want to get back the trust and confidence in our own skills, in our quality. That needs time," he told reporters.
Liverpool were on the end of the biggest sensation of the English Premier League season when bottom club Swansea City repelled a dramatic comeback from Juergen Klopp's title chasers to earn their first-ever league win at Anfield.
Liverpool beat Leicester City 2-1 to post a fourth successive Premier League victory but conceded their first goal of the season after a nightmare mistake by new keeper Alisson.
Belgium struck early and held off a late Brazil fightback to send the five-time champions tumbling out of the World Cup with a 2-1 victory in an end-to-end thriller on Friday that earned them a semi-final against France.
Neymar has given the ball away 84 times at this tournament
Philippe Coutinho scored a spectacular first-half goal for Brazil in their World Cup Group E opener on Sunday, only for Steven Zuber to cancel it out after the break.
Leroy Sane struck the winner as Manchester City beat Liverpool 2-1 in a gripping English Premier League clash.
Copa America kicks off in Chile on Thursday as a widening US-led investigation lifts the lid on rampant corruption among the sport's top officials.
Unbeaten Liverpool have 45 points from 17 games with champions Manchester City, who beat Everton 3-1 on Saturday, a point behind.
Jordon Ibe came off the bench to drive home the winner as Liverpool took a big step towards reaching the League Cup final with a 1-0 victory at Stoke City in the first leg of their last-four tie on Tuesday.
Wenger dropped Rob Holding for the visit to Stoke, preferring Shkodran Mustafi alongside Nacho Monreal and Sead Kolasinac at the back.
Liverpool ripped apart Manchester City with three goals inside the opening 31 minutes as they won their Champions League quarter-final, first leg tie 3-0 on Wednesday.
A last-minute own goal gave Liverpool a 2-1 win over Tottenham Hotspur to keep them top of the Premier League but Manchester City stayed two points behind having won at Fulham. Huddersfield Town were relegated after their defeat by Crystal Palace.
Liverpool, five-times European champions and last season's Champions League runners-up, eased past the Bavarians and into the quarter-finals with two goals from Sadio Mane and one from Virgil van Dijk after a goalless first leg at Anfield.
Liverpool's Sadio Mane marked his return from injury with a late goal to break Norwich City's resistance and secure a 1-0 win on Saturday to extend his side's Premier League lead to 25 points.
Images from the English Premier League matches played on Saturday.
Lionel Messi scored his maiden goal for Paris St Germain in Tuesday's 2-0 Champions League victory against Manchester City.
Brazil hammered Bolivia 5-0 in World Cup qualifiers on Thursday, giving coach Tite his third successive win in the most convincing performance from the five-time world champions for some time. Bolivia had not won a World Cup qualifier away from home since 1993 but Brazil were still excellent, particularly in the first half, when they scored four of their five goals.
Two goals in the first half from Roberto Firmino and Neymar gave Brazil an easy 2-0 victory over the United States in a friendly match in New Jersey on Friday.
Title-chasing Tottenham Hotspur made hay in the sunshine as Son Heung-min scored twice in a 4-0 thrashing of Watford that closed the gap on Premier League leaders Chelsea to four points in Saturday's early kickoff.
Liverpool opened up a seven-point gap at the top of the English Premier League with a 1-0 win at Brighton & Hove Albion on Saturday, while Arsenal's poor away form continued with a 1-0 defeat at West Ham United.
A round-up of Saturday's matches in the English Premier League.
Bayern Munich's Thomas Mueller scored a hat-trick as the undefeated champions crushed Eintracht Frankfurt 4-0 to open up a seven-point lead at the top.
Chelsea begin their Premier League title defence against Swansea City on Saturday in the unusual position of heading into a new season having been significantly outspent by their rivals.
Premier League champions Chelsea eased past a disappointing Everton with goals from Spaniards Cesc Fabregas and Alvaro Morata sealing a 2-0 victory on Sunday.
Liverpool scored three goals in 12 dramatic first-half minutes, two of them from Emre Can, on their way to a hugely entertaining 4-2 win over Hoffenheim which took them back to the Champions League group stage after a two-season absence on Wednesday.
A summary of all the Champions League matches played across Europe on Wednesday
Liverpool's defence of a Premier League crown won at a canter last season has become a nightmare
Mourinho's tinkerings meant a first start of the season for midfielder Scott McTominay, playing on the right of a three-man defence, while Anthony Martial played instead of the dropped Alexis Sanchez. On this evidence, more changes may be needed when United take on Valencia in the Champions League on Tuesday.
Mohamed Salah was inevitably on the scoresheet as Liverpool took full advantage of the inactivity of their top-four rivals to thrash West Ham United 4-1 at Anfield and provisionally move into second in the Premier League.
Images from the English Premier League matches played on Saturday.
Images from Wednesday's action in the UEFA Champions League.
A game that had been meandering along amid much mediocrity came to life on the stroke of halftime when Can's extraordinary overhead scissors kick from Lucas's chipped through ball rocketed into the top corner.
Photos from the English Premier League matches played on Sunday
Villarreal's Adrian Lopez produced a stinging sucker punch in stoppage time to leave Liverpool reeling and move the Spaniards closer to a maiden European final after their Europa League last four first leg clash finished 1-0 on Thursday.
Manchester United survived a tense finale to beat West Bromwich Albion 2-1 at the Hawthorns on Sunday and close to within 11 points of Premier League leaders Manchester City.
A round-up of Saturday's action in the Premier League.