Pochettino is really doing a good job currently but I think Chelsea's defense needs more strengthen, they should try strengthen their defense line by the January window, well the both teams put up a show yesterday and made the match so interesting, it was the toughest match of the week, Arsenal were lucky to get a draw they were the favorites but didn't quite impressed in the 1st half and conceded 2 goals well it's a London Derby so things like that are always expected.
It was Chelsea's best game and Arsenal's worse performance, and Chelsea could not still win because the players lack the winning mentality, and Arsenal players have it this season as they have often come back to win games this season. Chelsea was the lucky side because scoring two goals in short time would have given the Arsenal players the mentality that they could win the game, and they would have gone for it and probably gotten it because the Chelsea defenders were nervous at the end of the game after they conceded two goals. Chelsea has improved, but there is still a lot to do in the team.