The greatest picks out of lane to counter Viego include Zeri, Ezreal, and Sivir. These champs are all good at countering Viego with decent win rates over 54%. Even if these Viego counter picks are not played in your lane, it's not smart to play them into any of these matchups. They will very likely win against Viego.
Conversely, if the other team brings either Nilah or Leona, you should seriously consider choosing them, as they easily dominates these champs with win rates over 54% against each ofthem.
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