Have any Pokémon received stat nerfs between generations?

Question

I know there are a few cases of certain Pokémon’s stats being slightly buffed between generations (for example, Masquerain in Gen 7), but has the opposite ever happened?

Note: I am not counting any nerfs as a result of the Special stat being split in Gen 2.

Comments

I don't know any cases of this.

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Not to my knowledge,no. Probably so that a Pokemon's stats between games don't go down when transferring.

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Well, there are Pokémon that have had stat buffs between Gens, and GF seems to have no problem with those Pokémon's stats increasing when being transferred. I don't see why they would have a problem with a Pokémon's stats decreasing upon being transferred.

Answer 1

Some of Aegislash's base stats were 150 in gen 7, but they decreased to 140 in gen 8.

Aegislash is the first Pokémon to have its base stats lowered in a generation after its introduction and the only Pokémon whose base stats changed in Generation VIII.

source

Answer 2

No stats changed from generation 2 to 5.
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No stats were nerfed from generations 5 to 6.
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No stats were nerfed from generations 6 to 7.
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Comments

Not sure about it... But I think Ninetales used to have base 100 special attack, while nowadays has 81.

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The question says special stat splits don't count.

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Ah OK, jajaj... Sorry.