The top champs outside of lane to counter Corki include Nilah, Xayah, and Caitlyn. These champions are all great at countering Corki with decent win rates over 58%. Even if these Corki counter picks are not chosen in the same position as you, it's not a good idea to play him into one of these matchups. They will usually destroy Corki.
Yet, if the other team brings either Nocturne or Ivern, you should strongly consider selecting him, as he easily dominates these champions with win rates over 54% against each ofthem.
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