Man City are running away with it this season. Unbeaten in 18 games, with the only points dropped a draw against Everton in their second game. Looking back to last season though, things were looking quite different at the top of the Premier League. City had already been beaten three times and were sitting in third spot, 9 points behind eventual champions Chelsea.
The biggest gains at this stage have been made by Burnley, who after a surprise run of form are currently in a Europa League-worthy sixth. This time last season, they were eight places lower in 14th. Leicester, now in 8th, have made a jump of the same size having languished in 16th spot around Christmas 2016.