Arsenal have got their Champions League campaign off to a winning start with a 2-0 win over Athletic Bilbao thanks to Mikel Arteta's supersubs Arsenal won 2-0 away from home in Bilbao (Image: Arsenal FC via Getty Images)

In the steamy Spanish heat, Mikel Arteta remained ice cold . ‌

The San Mames was a cauldron on Tuesday evening, enough to make most teams melt during the opening matchday of the Champions League . However, Arteta's team came out swinging against Athletic Club . ‌

Viktor Gyokeres was the brightest spark, drifting out to the left he was creating opportunities for himself, but was unable to find the net. However, Arsenal's super Swede was left bloodied after a sickening clash of heads of Gabriel . ‌

Gyokeres seemed to lose a step after the collision,

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