I'm not surprised to watch the Blues defeats Tottenham Hotspur and breaking their unbeaten run in EPL this season. Chelsea are in possession with alot if potentials, one of which is picking incredible form against elite teams this season. Mauricio Pochettino is incharge and have been the core figure responsible to lifts the team's performance and standards in league positions.
Mind you that Chelsea are in tenth position and they have only 15 points from 11 games which is a poor return for a club like Chelsea, they have also won only 4 games in ths EPL this season. Spurs would never have lost that game, but they went two men down and had to play for over 40 minutes with just 9 players, they also had a couple of injuries to important players. I don't think Chelsea are resurgent, neither are they improving, and if their fans think they are flying right now, they'd be brought back to earth when they face City this Sunday.