Chelsea vs. Arsenal: Second half thread

We've got a proper derby on our hands today.  Cagey, testy, incident-filled both on the pitch and on the sidelines.  Arsenal probably should be down to 10 (Koscielny last man?), if not 9 (Chambers second yellow?) and perhaps without a manager on the sideline as well (Wenger shove?).

We've even had a goal, sole courtesy of Eden Hazard who took on three, got taken out by the fourth, and converted his penalty kick with absolute cool nonchalance.  Arsenal have threatened a few times, especially late in the half, but their final touches have been about as accurate ours and thus we remain at the narrow 1-0 to the good guys.

The scariest incident of course was the collision between Thibaut Courtois and Alexis Sanchez.  Courtois seemed ok to play on initially but had to be substituted a few minutes later.  Scary.