Zlatan Ibrahimovic bagging four goals, while Juventus and Bayern Munich preserved their leads and FA Cup holders Arsenal were dumped out of the competition.
Barcelona and Atletico Madrid led a Spanish Armada into the Champions League last 16 with home wins on Wednesday and in-form Aaron Ramsey steadied Arsenal's boat with a battling win against rocky Borussia Dortmund.
Barcelona are concerned about the financial clout of the Premier League when the new English television deal kicks in for top-flight clubs next season, said president Josep Maria Bartomeu.
Gijon spoiled Asier Illarramendi's return to Real Sociedad's midfield after rejoining from Real Madrid this week when they held the Basque club, coached by Scot David Moyes, to a 0-0 draw in San Sebastian.
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Chelsea reached the Champions League knock-out stage on Tuesday despite a 1-0 defeat by Basel in Group E after a late Mohamed Salah goal shocked the 2012 title winners, with Jose Mourinho saying they deserved to lose. Barcelona, without Lionel Messi but already into the last 16, went two goals down in Amsterdam but looked a different side in the second half after Ajax's Joel Veltman was sent off.
Barcelona lost for the second straight La Liga game in a 1-0 home reverse against Celta Vigo but there was no such trouble for Manchester City, who beat 10-man Manchester United 1-0 thanks to Sergio Aguero.
Chelsea returned to their early-season form to open up a five-point lead in the Premier League, Cristiano Ronaldo and Lionel Messi continued to make mincemeat of La Liga defences and Juventus extended their lead in Serie A. In France, Olympique Lyonnais retained top spot with a 2-0 win at RC Lens.
Manchester United humbled Manchester City 4-2 in the continent's big derby of the weekend.
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In April last year Leicester City were seven points adrift at the foot of the Premier League and seemingly going down.
Here is a fact file on the former Manchester United captain
From Sania Mirza to Virat Kohli, even the likes of Virender Sehwag has shown that swagger on the runway.
After setting a Spanish record 35 matches unbeaten in all competitions, Barcelona coach Luis Enrique is relishing the run-in to the end of the season with his side on course for a second successive La Liga, King's Cup and Champions League treble.
Jose Mourinho believes his Chelsea team could challenge for the Champions League this season despite their woeful form in the Premier League.
Ukraine's Metalist Kharkiv, due to play Schalke 04 in the Champions League playoff round later this month, have been kicked out of the competition, European soccer's governing body UEFA said on Wednesday.
Chelsea moved within touching distance of a first Premier League title in five years with a 1-0 win over Manchester United while Lionel Messi reached a landmark with his 400th career goal for La Liga leaders Barcelona.
One of the most disappointing aspects of Barcelona's failure to win major silverware last season was the lack of on-field chemistry between Lionel Messi and Neymar.
Bayern Munich are confident they have overcome a mini-slump just in time for their Champions League round of 16 second leg against Juventus on Wednesday as they chase a treble of titles this season.
Despite their first-leg advantage, Pochettino warned against complacency and said he wanted his team to play for another win, although they have had one day less to prepare than the Germans.
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Chelsea re-signed David Luiz and Premier League champions Leicester City broke their transfer record for striker Islam Slimani as English clubs exceeded the one billion pounds barrier when the curtain fell on transfer deadline day.
IMAGES from the UEFA Champions League last 16 first leg matches played across Europe on Tuesday
Images from the EPL matches played on Sunday
Liverpool's dream run was demolished in the most unlikely fashion by strugglers Watford on Saturday in what must be considered the most extraordinary reverse of the entire Premier League season. On the evening when the European champions were expected to complete the best sequence in the history of English football's top-flight with a 19th straight league victory, they were instead hammered 3-0 by the team lying one from bottom. Images from the EPL matches played on Saturday.
Check out the top footballers of the weekend.
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A trip to Manchester United has in the past struck fear into the heart of many an opposition team, but that will not apply to Chelsea on Sunday because they know history is on their side.
Lionel Messi was in inspired form as champions Barcelona hammered Celta Vigo 5-0 on Saturday, recording a fourth straight league victory which keeps them top of La Liga after Real Madrid had put the pressure on the Catalans with a 4-1 win at Eibar.
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Wayne Rooney made history by equalling Bobby Charlton's Manchester United record and becoming the club's leading all-time goalscorer after netting his 249th goal (543 matches) during an FA Cup match against Reading on Saturday.
The J-20 fighter is called Beijing's answer to the US F-22 stealth fighter and the F-35 that will be soon deployed in the Pacific by the United States and Japan.
The three teams with 100 percent records in this season's Champions League can secure their places in the knockout stage this week with two games to spare.
News of all that's transpired on and off the football field
News of all that's transpired on and off the football field
Jose Mourinho says he is going through the worst period of his managerial career.
Barcelona followed up Saturday's win over Real Madrid with another victory when Alexis Sanchez set the champions on their way to a 3-0 success at Celta Vigo on Tuesday that put them four points clear at the top of La Liga.
Thomas Meunier volleyed a spectacular last-minute goal to give Paris St Germain a 2-1 win at FC Basel, which took them into the last 16 of the Champions League on Tuesday.
Leicester City have the chance of making anything between 150 million pounds ($220 million) and 250 million pounds ($365 million) from their sensational Premier League triumph, according to sports marketing experts. The city of Leicester in England's Midlands should also expect to enjoy a huge commercial boost after its hometown team wrote the unlikeliest of sporting success stories, one that has captured headlines around the world. Yet though the club known as the Foxes will gain this substantial windfall, they still have a long way to go to join the true big-money elite of world football. The club that had never won the top-flight crown in its history will cash in through the 90 million pounds in prize money from the Premier League, and money from competing in Europe's Champions League next season, as well as increased TV and match day revenue.
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