The Chile international was hit with the ball by Robert Huth from a throw in and was given a yellow card in Arsenal's 1-0 win.
One of the hottest fixtures of the season usually, the FC crew discuss why this iteration of the Manchester derby feels flat.
Arsenal were far from convincing but thanks to a bit of a good fortune, in the end Nacho Monreal and Co. got the three points needed vs. Leicester.
Tottenham manager Mauricio Pochettino lauds his team's second-half effort against Crystal Palace.
Marten de Roon lifted Middlesbrough to victory as Sunderland's hopes of another escape took a potentially fatal blow.
Arsenal and Leicester looked destined for a 0-0 draw until Robert Huth's unfortunate deflection put the ball in his own net.