Manchester City sit at the summit of the Premier League table once again following Wednesday night's win over Everton, but that could change by the time they host Chelsea at the Etihad Stadium on Sunday.
With Liverpool in action on Saturday - and with a game in hand - the title race is still ultimately out of the champions' hands, so Pep Guardiola will know that every game is a must-win one from hereon in.
Sunday provides the opportunity for City to exact revenge on Chelsea, who inflicted the first defeat of the season on last term's centurions in the reverse fixture.
Sergio Aguero is likely to be integral to their hopes of doing that having netted a hat-trick against Arsenal last weekend, and here Sports Mole looks at his past record against the Blues.
Incredibly, four of Aguero's six favourite opponents are other members of the Premier League's 'big six', and against only Newcastle United has he registered more goals than against Chelsea.
The Argentine has scored 12 and created three more in his 17 meetings with the West Londoners across all competitions, including a brace in his most recent such outing in this season's Community Shield.
Aguero was absent for the reverse fixture at Stamford Bridge due to injury and has not scored in the Premier League against Chelsea since April 2017, although he does have five goals in his last five top-flight meetings with the Blues.
That tally includes a hat-trick at Stamford Bridge in 2016, and he actually has a better record away in London than he does at the Etihad in this fixture, netting only two of his 12 goals against Chelsea on home turf for Man City.
Five goals have come at the Bridge, with three more at Wembley and two during his Atletico Madrid days when they met in the group stages of the 2009-10 Champions League.
