The greatest picks outside of lane to counter Zed include Zeri, Kalista, and Kai'Sa. These are all good at countering Zed with decent win rates over 57%. Even if these Zed counter picks are not used in the same position as you, it's not a good idea to choose him into any of these matchups. They will usually win against Zed.
Yet, if the opposing team picks either Tahm Kench or Teemo, Zed mains should strongly consider selecting him, as he easily dominates these champs with win rates over 52% against both ofthem.
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