Introducing: 4v4 DUU Classic
hey y'all! i just wanted to announce that regardless of the possible release of Pokemon Champions, in April we will be hosting a special month-long tournament in four parts: 4v4 DUU Classic! Each week we will be hosting a tournament for each of our legacy formats (G, I, H, & J), with the finalists of each tour qualifying for Classic Playoffs. Playoffs will be 3 Best of 3s, with each player banning a Regulation (Regulation F Shift 1 will be included as a playable tier for playoffs) & the higher seed picking the first tier played. Seeding will be determined by placements in all of the qualifying tours (so it's encouraged to play all of them even if you already qualified for one!).
i'll make more metagame posts as we get closer to the actual event to give some context for prior regulations & even some of my own predictions + ideas about what is underexplored in those formats that i think could use some fleshing out.
Regulation I
i'm gonna start this off with a post about specifically Regulation I, one of the most beloved of our formats— notably a double restricted format, with threats like Groudon, Zacian-H, and the Necrozma formes.
this format left off pretty dominated by Tailwind Offense, with Talonflame being one of the best support mons in the tier. Brute Bonnet is also extremely notable due to how uncontested its Spore is & the ubiquity of Groudon giving it free Protosynthesis boosts in a lot of games just means that it's able to live a lot of things it just shouldn't.
for example:
+1 252 Atk Choice Band Zacian Play Rough vs. 252 HP / 252+ Def Protosynthesis Brute Bonnet: 182-216 (83.4 - 99%) -- guaranteed 2HKO
76+ Atk Tera Fire Groudon Heat Crash (120 BP) vs. 252 HP / 252+ Def Protosynthesis Brute Bonnet in Sun: 188-224 (86.2 - 102.7%) -- 18.8% chance to OHKO
here's a quick snapshot of the teams brought to the last major Reg I event to illustrate my point a bit:
notably a very Groudon-dominated event. post Sleep-Powder ban there was a significant amount of Groudon development— as the
dominant Groudon structure pre-ban was no longer really usable— and people started to realize how strong Brute Bonnet was, especially into the aforementioned new Groudon teams.
I would like to highlight a few of the things I think should get explored a bit more for the Regulation I tour.

Roaring Moon
this guy fell off really hard after Sleep Powder Jumpluff & Talonflame really took off, and now that Jumpluff is honestly kind of fraudulent I think there's a lot of room for it to come back. i'm honestly not the biggest fan of talonflame generally in this tier, it generally feels like it just gets out-statted in the vast majority of games & doesn't get a whole lot of value outside of just setting up Tailwind. meanwhile, Moon is the exact opposite— with a really good BST, a dark typing that allows it to excel against both Necrozma formes, good support options besides Tailwind like Breaking Swipe and Taunt. generally this guy just feels really underexplored for how statted it is & I think there are a lot more teams that should be using it over Talonflame.

Kyurem-W
this guy was basically unexplored for the vast majority of the format— a vocal minority of players would, in fact, slander its name and talk about how it was a dogshit mon and shouldn't be used. I heard all of this and decided to make an
entire video featuring Kyurem-W and multiple possible sets for it, resulting in 3 teams:
1.
Scarf
2.
AV
3.
Specs
would really like to see some additional exploration for it, as all 3 of these teams performed pretty well in tests & it seems really strong into the Groudon-infested metagame.

Zekrom
this guy got a lot of exporation in Regulation J, making it all the way to finals of a major tournament— and despite having a really bad Groudon & Zacian matchup I think this guy is still pretty underexplored in this tier. even in Reg J with Zacian-C & the Arceus formes legal this guy was able to carve out a niche & i think the same could be true for it in I.
i hope you're as excited to return to some of these formats as i am!!!
posts about G, H, and J will be coming within the next few weeks