Gen 9 OU format history

See accepted rule and legality changes for Gen 9 OU.

16 May 2026Moved out

Volcarona suspect test ended

OU suspect testUber

Volcarona moved back to Uber after the suspect test.

1 Apr 2025Moved out

OUUber

Roaring Moon crossed from OU to Uber.

4 Jan 2025Moved out

OU suspect testUber

Palafin moved back to Uber after the suspect test.

29 Sep 2024Moved out

OUUber

Kyurem crossed from OU to Uber.

7 Sep 2024Moved out

OUUber

Gouging Fire crossed from OU to Uber.