A few thoughts from what turned out to be a highly nervy derby.
- Plenty of contentious decisions, that's for sure. But surely, if nothing else, Arsene Wenger needs to face some post-match discipline after his little shove on Mourinho.
- Hazard may grab all the headlines, but Oscar's work in the middle was absolutely stunning. Though really, almost everybody bar André Schürrle and Branislav Ivanović on occasion was pretty great today.
- The switch to 4-3-3 halfway through the second half (Mikel for Schurrle) did the trick of settling the game down, just when it looked like Arsenal were gaining the upper hand.
- DIEGO COSTA! Only one off the record of 10 goals in his first 7 Premier League games. Nice miss there at the end, too.
- With Southampton's loss, Chelsea are 5 points ahead of second place Manchester City. Top of the league and having a laugh.