Barcelona centre-back Javier Mascherano left Saturday's El Clasico at the Santiago Bernabeu after suffering an apparent groin injury from a tackle by Real Madrid midfielder James Rodriguez in the 11th minute.
The Argentine international left the pitch momentarily before playing out the following ten minutes of the first half in noticeable discomfort.
Mascherano conceded moments later, signalling to the bench for a change before being substituted for Jeremy Mathieu in the 27th minute.
The football world came to a stop for 90 minutes on Saturday, as Spanish juggernauts Real Madrid and Barcelona, whose mutual hatred has roots that run far deeper than the action on the pitch, renewed their unparalleled hostilities in the latest installment of El Clasico.
Billed as an encounter between two giants, it ended up being a horribly one-sided contest, as the Blaugrana left the home fans jeering their own team at the final whistle, hammering Los Blancos 4-0.
Here's everything you need to know about the 231st edition of football's eternal rivalry:
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