Arsenal and Manchester United stars collided, and one came worse off than the other.
This robust challenge from Olivier Giroud just before half-time unsurprisingly saw the Manchester United man's game end prematurely in the 0-0 draw.
After a break in play, Rafael got up and was able to continue for a brief period before half-time, but did not re-appear for the second half.
David Moyes revealed out of the game that the Brazilian had suffered a concussion as a result of landing heavily on the Emirates pitch, but was 'ok'.
A break this weekend, with the team set to jet off to Dubai with no game due to the FA Cup, should allow for a positive recovery.
image: © Andrea Sartorati