Giroud scored with an improvised volley in the Premier League match on Jan. 1, producing an acrobatic flick with his left heel to convert Alexis Sanchez's cross into the net off the crossbar while tumbling forward.
Karim Benzema scored twice in the final few minutes to give Real Madrid a 3-1 win at Espanyol, while Barcelona breezed past Real Valladolid with a comfortable 4-0 LaLiga victory.
Veteran Drogba showed that he still has a lot of steam in him as he scored in Chelsea's win over Spurs, while Aguero continued to top the goal-scorers' list this season, finding the net for City. Images from the EPL matches played across England on Wednesday.
Premier League-leading Chelsea's success on the pitch has been recognised by the Professional Footballer's Association (PFA) with Eden Hazard and N'Golo Kante making the shortlist for the organisation's Players' Player of the Year award.
A round-up of Wednesday's action in the UEFA Champions League.
Manchester United secured the point they needed to finish second in the Premier League with a dull 0-0 draw at West Ham United on Thursday.
Argentina and Brazil both lost their opening World Cup qualifiers on Thursday as the South American campaign for Russia 2018 started in unexpected fashion.
Chile qualified for the Copa America final after two goals from Eduardo Vargas gave them a 2-1 win over Peru in an action-packed semi-final marked by another controversial refereeing decision.
Alexis Sanchez hit a hat-trick as Barcelona swept aside Elche 4-0 to return to the top of La Liga on goal difference ahead of Atletico Madrid on Sunday.
Fellow Serie A sides Atalanta and Lazio also won while Portugal's Vitoria Guimaraes began their match against Salzburg with not a single European player in the team.
Brazil beat Chile 3-2 in a penalty shootout to reach the World Cup quarter-finals after their dramatic last-16 match in Belo Horizonte ended 1-1 after extra time on Saturday.
Chelsea pair Diego Costa and Eden Hazard were named on Thursday on the shortlist for the Professional Footballers' Association (PFA) Player of the Year award.
Chelsea midfielder N'Golo Kante was named Player of the Year by the Premier League on Sunday, adding a third individual accolade to a list of achievements this season that includes winning a second consecutive Premier League title.
Manchester City's Premier League home match against Arsenal has been postponed because players from the London club have had contact with the owner of Greek side Olympiakos Piraeus, who has contracted the coronavirus. Meanwhile La Liga matches will be played without fans for at least the next two rounds of fixtures to try to stop the spread of the coronavirus, the Spanish league said.
Neymar played 'cat-and-mouse' with Barcelona during the close-season before his move to Paris St Germain, Barcelona vice-president Jordi Mestre has said.
Images from Copa America matches played on Monday.
Kingsley Coman scored one goal and set up another as Bayern Munich came from a goal behind to beat VfB Stuttgart 3-1 on Saturday and defend their top spot in the Bundesliga.
Arsenal's hopes of catching Manchester City for second place in the Premier League suffered a setback.
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.
Out-battled for an hour by their modest south coast opponents, Arsenal belatedly sparked into life and Olivier Giroud's glancing header two minutes into stoppage time completed their remarkable recovery from 3-0 down.
Jose Mourinho dismissed speculation linking him with a return to Real Madrid, on Monday, saying he wants to stay on as Manchester United manager beyond his current contract.
This and more from the happenings in the world of football.
Players from European champions Barcelona made up nearly half of UEFA's Team of the Year which was revealed on Friday, while Cristiano Ronaldo made the lineup for a record 10th time. Eight players from La Liga were included in the final XI, voted for by 7.2 million UEFA.com users from a 40-strong shortlist. Lionel Messi, Dani Alves, Gerard Pique, Andres Iniesta and Neymar were the Barcelona players included, while Real Madrid provided Ronaldo, Sergio Ramos and James Rodriguez.
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.
Manchester City survived a stirring Leicester City fightback to claim a 2-1 win that lifted them above Liverpool into third in the Premier League on Saturday.
Jose Mourinho admitted that Sunday's 2-0 defeat to Arsenal means it will now be "impossible" for Manchester United to finish in the top four.
Argentina and Chile advanced to the semi-finals of the Copa America on Saturday with Chile beating Mexico 7-0 and Lionel Messi getting a goal in Argentina's 4-1 win over Venezuela to equal his country's all-time scoring record.
News of all that's transpired on and off the football field
Arsenal scored twice in the opening seven minutes and ended the match as a contest with a third in the 19th as they crushed Manchester United 3-0 to move above them into second place in the Premier League at the Emirates on Sunday.
Normally the candidates for goal of the season are spread throughout the 10 months of the campaign, but this weekend's Premier League matches produced six memorable strikes in little over 24 hours.
Barcelona kept up the pressure on La Liga title rivals Atletico Madrid and Real Madrid when Lionel Messi struck from the penalty spot in a 1-0 win at Espanyol in Saturday's Catalan derby.
'When you are outside the top four I don't think you should speak about the title'
Arsenal manager Arsene Wenger has been given a four-match touchline ban after admitting a Football Association (FA) misconduct charge for appearing to push the fourth official during their Premier League win over Burnley on Sunday.
Third tier Peterborough United produced the performance of the FA Cup fourth round when they twice came from behind in the dying minutes to earn a 2-2 draw at Premier League West Bromwich Albion on Saturday.
Manchester United tightened their grip on second place in the Premier League
Photos from the English Premier League matches played on Saturday
Earlier in the day, Bolivia beat Venezuela 3-1 at home and Uruguay and Paraguay drew 0-0 in Montevideo.
A round-up of Tuesday's action in the UEFA Champions League.
On a day of frenetic spending that took the Premier League total to a record far above one billion pounds ($1.29 billion), Antonio Conte's side also missed out on two of their other targets - Alex Oxlade-Chamberlain and Fernando Llorente.
Manchester United manager Jose Mourinho was sent off for the second time in a month on Sunday as the controversial coach watched his side draw 1-1 at home to West Ham United and lose more ground in the English Premier League title race.