It was a trio for Theo, as Arsenal’s speedy Englishman helped the Gunners to a big halftime lead over West Bromwich Albion.
Walcott scored in the 4th, 14th and 37th minutes for Gunners, who could live in the mind of Baggies’ goalkeeper Boaz Myhill for a while.
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The first set the tone, a good-looking strike from the right side of the box.
Then, it was two.
Finally, he tapped home a perfect pass to finish up the first half hat trick and give Arsenal a four-goal lead.