It has been some season so far for Alexis - but his sensational hat-trick against West Ham on Saturday is arguably the highlight of his campaign.
After laying on the opening goal for Mesut Ozil, the Chile international scored the team's second with a brilliant individual effort before lashing home a third shortly afterwards.
Alexis saved the best for last though, racing on to a through ball before applying an impudent finish to complete a memorable hat-trick.
The 27-year-old was the runaway winner of our man-of-the-match poll and you can watch all his very best bits from the 5-1 win at the London Stadium by clicking the 'Play' button above.
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More polls and quizzes to follow soon
