Season 2

Season 2 of GO Battle League lasted from May, 2020 to July , 2020. It is preceded by Season 1 and succeeded by Season 3.

Premier Cup was introduced in this Season. Similar to the Master League, the Premier Cup does not have a limit on Combat Power. However, Legendary and Mythical Pokémon are not eligible to participate.

During this Season, Trainers still did not require walking to unlock battle sets. A maximum of 6 sets could be played after June, 2020.

Ranks and Ratings
The requirements were different from Season 1.

Rewards
Pokémon reward encounter was changed to the third win on the basic rewards or the first win on the premium rewards. From June to, 2020, the Rare Candy and Charged TM positions in premium track were swapped.

Basic Premium

Stardust

The random items included:
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Reaching rank 10 could reward avatar items and an avatar pose inspired by Steven and Hype Pose.

Pokémon
Guaranteed first Pokémon encounters:
 * Metagross: rank 1
 * Stunfisk: rank 4
 * Rufflet: rank 8
 * Scraggy: rank 9
 * Pikachu Libre: rank 10 (one only)

The Unova Starters were not available from June to, 2020.

End-of-season rewards

 * (rank 7 or above)

Attack Updates
At the start of this Season, certain Attacks had their stats changed and certain Pokémon received updates to their obtainable Attacks.

Attack Changes

 * Drill Run: Energy cost decreased from 55 to 45 in Trainer Battles.
 * Moonblast: Base power decreased from 130 to 110, energy cost decreased from 70 to 60 and 30% chance to decrease the opponent's Attack by 1 stage in Trainer Battles.
 * Wild Charge: Base power increased from 90 to 100, energy cost decreased from 50 to 45 and 100% chance to decrease the user's Defense by 2 stages in Trainer Battles.

Attack Availability Updates
Some Pokémon received updates to their obtainable Attacks. These were added to their standard Attack pools.

Events

 * Season 2 was originally planned to start on May, but due to certain technical issues, it was delayed until May.
 * As a results, the format schedule was changed. Below shows the original version:
 * Battle League Great.png Great League: May, 2020 to May , 2020
 * Battle League Ultra.png Ultra League: May, 2020 to June , 2020
 * Battle League Master.png Master League and Premier Cup: June, 2020 to June , 2020
 * GO Battle League.png All three Leagues and Premier Cup: June, 2020 to July , 2020
 * Season 2 was disabled between June to June  due to a serious exploit. The glitch is about using two devices at the same time to charge Charged Attacks immensely, making Pokémon such as Swampert and Melmetal "broken", as described by the community.
 * As a results, the format schedule was changed again. Below shows the version before the downtime:
 * Battle League Great.png Great League: May, 2020 to June , 2020
 * Battle League Ultra.png Ultra League: June, 2020 to June , 2020
 * Battle League Master.png Master League and Premier Cup: June, 2020 to July , 2020
 * GO Battle League.png All three Leagues and Premier Cup: July, 2020 to July , 2020
 * The leaderboard was temporarily disabled between June to July.

Maintenance

 * May, 2020 - temporarily closed for 3 hours
 * May, 2020 - temporarily closed for 5 hours
 * May, 2020 - temporarily closed for 3 hours
 * May, 2020 - temporarily closed for 3 hours
 * June, 2020 - temporarily closed for 3 hours
 * Disabled between June to June
 * June, 2020 - temporarily closed for 3 hours
 * June, 2020 - temporarily closed for 3 hours
 * July, 2020 - temporarily closed for 3 hours
 * July, 2020 - temporarily closed for 2 hours
 * July, 2020 - temporarily closed for 3 hours
 * July, 2020 - temporarily closed for 3 hours
 * July, 2020 - temporarily closed for 3 hours
 * July, 2020 - temporarily closed for 3 hours