The 'overlooked' midfielder was many City supporters' man of the match against the Saints.
The 29-year-old was somewhat of an unsung hero at St Mary's, with three separate goalscorers enjoying a share of the limelight for Manuel Pellegrini's men.
But Fernandinho impressed nevertheless - during what was a huge win for the Premier League champions.
"We have to play 25 games more. It is a lot of points and nobody knows what will happen in the future," Pellegrini told BBC Sport after the impressive win.
"In football in one week you can change your position. Chelsea are playing very well and we will see what will happen. We must try to concentrate just on Sunderland.
"I think that we can complain about a lot of things from this team this year - that we are conceding too many goals and not scoring as many as last season.
"But the only thing that we cannot complain about in the squad is the spirit, the personality, the character and the ambition to continue winning."
In terms of Manchester City's man of the match against Southampton, popular suggestions were Yaya Toure, Vincent Kompany and more. For many, however, Fernandinho was the linchpin behind the win that takes City about the Saints in the table...
Thought Fernandinho was class today & Yaya Toure played good. Took his goal well! #MCFC— Dan Evans (@_DLE29) November 30, 2014
I'm glad Fernandinho is getting some recognition today, I think we're a much better side with him alongside Yaya #MCFC— GloryHunter since'77 (@Chris_Wilde) November 30, 2014
Quality performance and great result, every player was outstanding, but my MOTM was fernandinho, he was everywhere. #MCFC— Ben Mccumesky (@benmcc7) November 30, 2014