Four goals and a string of impressive performances made sure no other in-form Blue could catch Kun, with Joleon Lescott finishing second in the vote and David Silva third.
He started as he meant to go on with a penalty opener to put Fulham on the slide, then popped up for a priceless late winner at Porto in that Europa League cracker.
His quick-fire starter in the second leg put paid to the Portuguese holders, and his predatory strike against Blackburn sealed another victory in the Premier League title chase.
Lescott won support for a month that saw him nick the winner against his boyhood heroes Aston Villa, while Silva’s sterling service to team-mates was back to his sparkling best.
Hayley Hardy is the lucky City fan drawn at random from the 1,300 who voted for Sergio, and she will present her hero with his award at Carrington.