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I played a UU ladder match against somebody today who had a Tornadus on his team. I checked the team builder later, and Tornadus is not categorized as UU, RU, or NU. Is this a bug?
The tiers themselves were updated yesterday. Tornadus, Meloetta, Mew, Virizion and Cofagrigus are all UU now, Stoutland is RU now, and Metang is NU now.