Welcome to the SV Battle Stadium Singles Viability Rankings. As always, the goal of this resource is to rank Pokemon based on their effectiveness in the Battle Stadium Singles metagame. Posts in this thread will be taken into account when deciding rank changes, but ultimately the final decision will fall on the VR Council. This is not meant to be an objective list and there may or may not be placements you disagree with, but that's all the more reason to discuss your opinions here!
The Viability Rankings will be updated appropriately as the metagame progresses or when new Pokemon become available, and we will take posts in this thread into consideration. There is no concrete schedule to when these updates will happen, but the VR Council has the final say on what gets moved in the ranking list. These users are all well informed players that gather the community's input to make final decisions on any individual Pokemon. This is a fairly large group that will cycle in and out of activity, but at the moment the rankings have been discussed by the following users:
- boundtowin
- Butch Hardnight
- deepseazapdos
- DerpySuX
- greilmercenary9
- Kiby
- luisin
- papiloco
- Pearl
- Photon
- Psynergy
- StarkGod
- Theorymon
- Thick Fat Azumarill
Regulation A 
Regulation B
Regulation C
Regulation D
Regulation E
Regulation F
Regulation G
Regulation HRestricted Pokemon
S Tier:
S rank
Calyrex-Shadow Koraidon MiraidonS- rank
Ho-OhA Tier:
A+ rank
Calyrex-Ice
Lunala
Zacian-CrownedA rank
Eternatus
KyogreA- rank
Necrozma-Dusk Mane
Terapagos
Zamazenta-CrownedB Tier:
B+ rank
LugiaB rank
Kyurem-BlackNon-Restricted Pokemon
S Tier:
These are the biggest, most relevant threats in the metagame. You better prepare for them, as they can fit a large majority of teams very well!
S rank
Chien-PaoFlutter Mane Ting-LuS- rank
Gliscor
Urshifu (Rapid Strike)A Tier:
These are very metagame relevant threats that fit on a wide variety of teams, or do a specific role very well.
A+ rank
Dondozo Dragonite
Landorus-Therian Ursaluna-BloodmoonA rank
Garganacl
Glimmora Ogerpon-Hearthflame
Ogerpon-Wellspring
SneaslerA- rank
Archaludon
Ditto
Iron Treads
MimikyuB tier:
These Pokemon have at least a few flaws that hold them back from being huge threats in this metagame, but they still have unique selling points that make them good picks for some teams.
B+ rank
Alomomola
Clodsire
Grimmsnarl
Rillaboom
ScizorB rank
Chi-Yu
Iron Hands Skeledirge Ursaluna
Wo-ChienB- rank
Arboliva
Incineroar
Muk-Alola
Tyranitar Urshifu (Single Strike)
Weezing-GalarC tier:
These Pokemon are fairly niche, though not unviable. If your team uses one of these Pokemon, make sure your team needs their specific selling point, and isn't a job better done by more relevant Pokemon.
C rank
Chansey
PrimarinaRules
- Post intelligently. Posts like "I think Pokemon X should be in this tier" without giving any reasoning is not helpful.
- Usage statistics may be used to support an argument or a claim, but avoid basing your entire argument around them.
- No flaming, if you disagree with someone please be civil about it.
- No one-liners or useless comments.