Antonio Conte has transformed a Chelsea side that looked to be struggling to make the top four a few months ago into genuine title contenders.
The Blues suffered disappointing defeats at the hands of Liverpool and Arsenal in September, with the defence in particular called into question after a few poor performances.
Conte’s job was even thought to be at risk even at that early stage of the season, but the former Italy and Juventus manager tweaked his formation at Stamford Bridge to incorporate a back three, and it has been a revelation.
Chelsea have won five successive league matches, including victories over Manchester United, Southampton, and Everton, and haven’t conceded a goal in any of them.
Eden Hazard and Diego Costa look to be getting back to the sort of form that fired Chelsea to the title the season before last, while the defence, headed by David Luiz, looks a totally different outfit.