Novak Djokovic was criticised for hosting the tennis tournament amid a pandemic after his coach Goran Ivanisevic and players Grigor Dimitrov, Borna Coric and Viktor Troicki returned positive tests over the two legs in Serbia and Croatia.
Manchester United's Bruno Fernandes fired home a late penalty to rescue a point in a 1-1 draw at Tottenham.
Man City are accused of overstating sponsorship revenue to hide that they had not complied with UEFA's financial fair play (FFP) rules between 2012 and 2016.
With a 4-0 win over Southampton on Saturday, Liverpool moved a scarcely believable 22 points clear in the Premier League, the biggest advantage any leader has had at the end of a day in English top-flight history.
Manchester United made a surprise late addition to their squad on deadline day by bringing in 30-year-old Nigerian striker Odion Ighalo on loan from Chinese club Shanghai Shenhua until the end of the season.
It's been a 30-year wait but there is no longer any trepidation from the Liverpool supporters as their team has moved 16 points in front at the Premier League summit.
The 38-year-old Swede has agreed on a deal until the end of the season with the option to extend the contract for another season, the club announced.
Manchester United will take on Club Brugge in the last 32 of the Europa League while struggling Arsenal will face Greek side Olympiakos following Monday's draw in Nyon.
Wolverhampton Wanderers also thrashed Besiktas 4-0 in Group K, while Arsenal came from two goals down to draw 2-2 away to Standard Liege and finish first in their pool ahead of Eintracht Frankfurt.
Arsenal beat AZ Alkmaar 4-0 in Europa League group stage while Manchester United's lean goalscoring form continued in a turgid 0-0 draw away to Dutch club AZ Alkmaar.
The season-opening match was Frank Lampard's debut as a Premier League coach for Chelsea.
Destiny of Premier League title in City's hands after 2-0 win over United. City now lead rivals Liverpool by a point with both teams having three games to play.
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