Competitive battles have been available since January 2020 in Pokémon GO. Now, by entering the GO Battle League, you can compete against players from all over the world.
Each season consists of the Great League, Ultra League, and Master League. Today, we're bringing you a tier list of the best Pokémon to use when you fight in the Master League.
In Master League, there isn't maximum CP.
Note that battles consist of a 1v1 format, using a team of three Pokémon.
The toughest Pokémon are listed here, but you should pay attention to their stats when evaluating them. Try to keep only the best. Also, don't forget to unlock the second Charged Move for your Pokémon!
This Tier List is realized thanks to the Pvpoke ranking.
Tier 1

Steel and Dragon

Fairy

Dragon and Ghost
Tier 2

Normal

Ice

Steel

Fire and Steel

Dragon and Ground

Dragon and Ghost

Fighting

Fighting

Dark

Ground and Rock

Ground

Water

Rock

Steel and Psychic

Water and Ground

Rock and Dark

Psychic

Psychic

Dragon and Flying

Ice and Flying

Dark and Dragon
Tier 3

Water and Flying

Fighting

Ice and Ground

Electrik and Steel

Steel and Fighting

Electric and Flying

Dragon and Psychic

Fire and Fighting

Water

Electric

Water

Dragon and Flying

Steel and Psychic

Water and Dragon

Normal

Bug and Steel

Normal

Ground and Steel
Tier 4

Ground and Rock

Psychic and Fighting

Ground and Ghost

Grass and Fighting

Dark and Ice

Dragon and Psychic

Steel

Steel and Rock

Psychic and Fairy

Fire and Flying
You can also use: Ho-Oh, Leafeon, Typhlosion, Vaporeon, Mesprit, Glaceon, Rampardos, Venusaur, Pinsir, Lapras, Absol and more.
Tier 5

Electric

Water

Ground

Fire
Here's a non-exhaustive list of other great Pokémon you can use in battle:
Meganium, Crobat, Honchkrow, Dusknoir, Yanmega, Hippowdon, Cobalion, Cryogonal, Escavalier, Alolan Exeggutor, Scrafty, Drifblim, Cloyster, Hitmonlee, Scyther and more.
Which is the best team to use?
Currently, the game data analyzed by the Silph.gg website allows us to see which team is the most used in the Master League, and especially which one is the most winning.
This team is difficult to obtain since you have to have captured Giratina, Kyogre and Dialga via the Raids.

Shadow Claw, Shadow Ball, and Ominous Wind

Waterfall, Surf, and Blizzard

Dragon Breath, Iron Head, and Draco Meteor

It's time to battle trainers with the ultimate level on Pokémon GO. The pre-season is still in progress for Competitive Mode, but the Master League is now activated.