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The switch to playing Alexis Sanchez instead of Olivier Giroud up front has definitely helped Walcott and Germany midfielder Mesut Ozil thrive too.
Sanchez runs in behind defences more, and Arsenal's build-up play is quicker.
Simple but understated point which ties into what we've said about Alexis's role in the past. Your attack is only as quick in transition as your striker is.
I think Theo is a player who needs space created for him, rather than creating it himself, which is why I never thought much of him playing up front. When you put Alexis there he'll work the channels and run defenders ragged all day though.
