Season 4

Season 4 of GO Battle League lasts from September, 2020 to November , 2020. It is preceded by Season 3 and will be succeeded by Season 5.

GO Battle Night occurs during this season on November, featuring new format – Flying Cup, in which only Flying-type Pokémon are allowed.

During this Season, Trainers still do not require walking to unlock battle sets.

Formats
Halloween Cup: Only Poison-, Ghost-, Bug-, Dark-, and Fairy-type Pokémon allowed, excluding Legendary and Mythical ones. 1,500 CP limit.

Flying Cup: Only Flying-type Pokémon allowed. 1,500 CP limit.

Unlike the last Season, Ultra Premier Cup is also available at the last period.

Ranks and Ratings
Rank 8 and 9 can be reached by winning certain amount of battles rather than reaching the set ratings. Rating is only shown after reaching rank 9.

Rewards
Basic Premium

Stardust

The random items include:
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Reaching rank 10 can earn avatar items and an avatar pose inspired by Blue.

Pokémon
Guaranteed Pokémon encounters:
 * Pidgeot is the first guaranteed encounter.
 * Galarian Zigzagoon is the first encounter in rank 4.
 * Galarian Farfetch'd is the first encounter in rank 7.
 * Rufflet is the first encounter in rank 8.
 * Scraggy is the first encounter in rank 9.
 * Libre Pikachu is the first encounter in rank 10, one only.

Halloween-costumed Kanto Starters were only available during Halloween Cup.

End-of-season rewards

 * (rank 7 or above)

Events

 * Due to serious connection problems since the start of this Season, the GO Battle Night originally planned on September was postponed.
 * On October, the rescheduled time of GO Battle Night was announced to be November 6 p.m. to 11:59 p.m. local time.