Man City's ruthless nature against Fulham is a sign of things to come this season

Friday night's shock defeat for Manchester United will not be the first or last FA Cup giant killing.

The domestic competition throws up a range of surprising results and Ralf Rangnick's side were just the latest high profile club to fall victim to lower league opposition.

Chelsea nearly followed suit less than 24 hours later and after 120 minutes it took a Kepa save to avoid them facing the lottery of a penalty shootout against League One Plymouth Argyle.

Thomas Tuchel's Blues managed to progress but they didn't cover themselves in glory.

Pep Guardiola's side looked set to be following suit when Fabio Carvalho gave Fulham the lead, but less than ten minutes later City had hit the front and a second half brace from City's comfortably sealed the Citizen's progression.

Yesterday's result at the Etihad laid down yet another marker for the Premier League's big boys.

Guardiola's side are ruthless and where United and Chelsea underestimated their lower league opposition and were left stunned, City kept rolling on.

This is because it does not matter whether it's the Premier League, FA Cup or Champions League - Guardiola ensures that his side have the same mentality.

That is why they continue to be the side to beat in England.

City's boss and players realise that no matter who the opponent is, a victory is worth its weight in gold.

Their ruthless team spirit and eagerness to be victorious is why Man City will be there or thereabouts in three competitions this season.

Heading back to the Premier League in midweek, City will be able to go in full of confidence - United and Chelsea cannot enjoy that luxury.

If it was not already obvious, Guardiola's men are not likely to be hit with complacency going into the final stretch -