GO Battle Week: Might and Mastery
Starts:
Wednesday, May 21, 2025, at 12:00 AM Local Time
Ends:
Tuesday, May 27, 2025, at 11:59 PM Local Time
Bonuses
- The maximum number of sets you can play per day will increase from five to 20—for a total of 100 battles—from 12:00 a.m. to 11:59 p.m. local time.
- Trainers will also receive 4× Stardust from win rewards (this does not include end of set rewards).
- Pokémon encountered via GO Battle League rewards will have a wider variance of Attack, Defense, and HP.
Active Leagues
From Tuesday, May 13, at 1:00 pm PST to Tuesday, May 20, 2025, at 11:59 pm PST
- The Master League
- Retro Cup: Great League Edition
From Tuesday, May 20, at 1:00 pm PST to Tuesday, May 27, 2025, at 11:59 pm PST.
- The Great League
- Catch Cup: Great League Edition
Research 
GO Battle Week
Event-exclusive Timed Research
Free battle-themed Timed Research will be available. Rewards include a hat for your avatar inspired by Mustard.
STEP
1
GO Battle Week (1/1)
Battle in the GO Battle League 5 times 
×7500
7500 XP
Battle in the GO Battle League 10 times
×7500
7500 XP
Use 10 supereffective Charged Attacks
×7500
7500 XP
Power up Pokémon 10 times
×7500
7500 XP
×3
×1
Mustard Hat
