Season 1 of GO Battle League lasted from March 13th, 2020 to May 11th, 2020.[1] It is preceded by Preseason and succeeded by Season 2.
Formats[]
| Formats | Start Date | End Date |
|---|---|---|
 Great League
|
March 13th, 2020 | March 27th, 2020 |
 Ultra League
|
March 27th, 2020 | April 10th, 2020 |
 Master League
|
April 10th, 2020 | April 24th, 2020 |
| Great League Ultra League Master League
|
April 24th, 2020 | May 11th, 2020 |
Ranks and Ratings[]
The requirements were different from Preseason.[2]
| Rank | Requirement |
|---|---|
| Rank 1 | Start |
| Rank 2 | Complete 5 Battles |
| Rank 3 | Win 2 Battles (after reaching rank 2) |
| Rank 4 | Win 3 more Battles |
| Rank 5 | Win 5 more Battles |
| Rank 6 | Win 7 more Battles |
| Rank 7 | Win 10 more Battles |
| Rank 8 | Reach rating of 2000+ |
| Rank 9 | Reach rating of 2500+ |
| Rank 10 | Reach rating of 3000+ |
Rewards[]
Basic
| 1st | 2nd | 3rd | 4th | 5th |
|---|---|---|---|---|
 |
1×
 |
2×
 |
 |
|
Premium
| 1st | 2nd | 3rd | 4th | 5th |
|---|---|---|---|---|
1×
|
|
|
5×
 |
8×
|
Stardust
| Rank | 1st win (Basic) | 5th win (Basic) | 3rd win (Premium) |
|---|---|---|---|
| 1 | 300 | 600 | 900 |
| 2 | 350 | 700 | 1100 |
| 3 | 400 | 800 | 1300 |
| 4 | 450 | 900 | 1500 |
| 5 | 500 | 1000 | 1700 |
| 6 | 550 | 1100 | 1900 |
| 7 | 600 | 1200 | 2100 |
| 8 | 650 | 1300 | 2300 |
| 9 | 700 | 1400 | 2500 |
| 10 | 750 | 1500 | 2700 |
The random items can include:
- ,
- ,
- ,
- or .
Reaching rank 10 awarded avatar items and an avatar pose inspired by Steven Stone from Pokémon Omega Ruby and Alpha Sapphire.
Pokémon[]
Metagross was the first guaranteed encounter. Pikachu Libre was the first encounter in rank 10, one only.
Tier 5 Raid Bosses could be obtained starting at rank 4 during their time in raids.
New 
| Unlock Rank | Possible Pokémon Encounters |
|---|---|
| Rank 1 |     |
| Rank 4 |        |
| Rank 7 |       |
| Rank 10 |  |
End-of-Season rewards[]
- (rank 7 or above)
Attack updates[]
Unlike later Seasons where updates occurred at the start of the Season, these Attack updates were introduced halfway into this Season on April 2nd, 2020 instead:[3]
Attack changes[]
- Bullet Seed: Energy gain increased from 11 to 13 in Trainer Battles.
- Energy Ball: Energy cost decreased from 60 to 55 in Trainer Battles and 10% chance to decrease the opponent's Defense by 1 stage in Trainer Battles.
- Leaf Tornado: 50% chance to decrease the opponent's Attack 1 stage increased to 2 stages in Trainer Battles.
- Ancient Power: Power decreased from 70 to 45 in Trainer Battles.
- Silver Wind: Power decreased from 70 to 45 in Trainer Battles.
- Ominous Wind: Power decreased from 50 to 45 and Energy cost increased from 40 to 45 in Trainer Battles.
Attack availability[]
There were no changes to Pokémon Attack pools for this Season.
Events[]
- GO Battle League Season 1 Launch Celebration was held to promote Season 1.
- When Season 1 was initiated, the rank and rating of Trainers were slightly altered from that in Preseason. Later, Niantic adjusted all Trainers to rank 1.[4] If a Trainer claimed the end-of-preseason rewards during this time slot, their Preseason record would be lost.
- Due to the COVID-19 pandemic, Trainers do not require walking or PokéCoins to unlock battle sets since the start of Season 1.[5]
- It was originally planned to end on April 13th and then May 1st.[6] The bonus is still active for today.
- Since April 8th, if one lost all 5 matches in a set, they could continue playing in that same set until scoring a win for up to 15 losses, after which they would move to the next set.[7]
- This feature was removed at the beginning of Season 3.
- GO Battle Day: Marill took place on April 12th.
- Season 1 was originally planned to end on May 1st, but due to certain technical issues, it was delayed until May 11th.[8]
Maintenance[]
- March 13th, 2020 - soon after the start of Season 1, GO Battle League was closed for 20 minutes to adjust rank and rating
- On the same day, it was down for 3 to 5 hours again.
- March 18th, 2020 - temporarily closed for 1 to 3 hours
- March 27th, 2020 - temporarily closed for 1 to 3 hours when Great League ended
- March 30th, 2020 - temporarily closed for 1 to 3 hours
- April 2nd, 2020 - temporarily closed for 1 to 3 hours
- April 6th, 2020 - temporarily closed for 1 to 3 hours
- April 10th, 2020 - temporarily closed for 1 to 3 hours when Ultra League ended
- April 13th, 2020 - temporarily closed for 3 to 5 hours
- April 14th, 2020 - temporarily closed for 3 to 5 hours
- April 21st, 2020 - temporarily closed for 2 to 4 hours
- April 24th, 2020 - temporarily closed for 1 to 2 hours
- May 1st, 2020 - temporarily closed for 2 hours
- May 5th, 2020 - temporarily closed for 5 hours
- May 7th, 2020 - temporarily closed for 3 hours
References[]
- ↑ GO Battle League Season 1 begins Friday, March 13, 2020, at 1:00 p.m. PDT (GMT −7). Pokémon GO Live. Retrieved on 2020-03-05.
- ↑ Gamemaster update 13-03-20 - GBL Rank & Reward changes /r/TheSilphRoad. Retrieved on 2020-03-14.
- ↑ Community Note: Trainer Battle attack updates for Grass-type month. Pokémon GO Live. Retrieved on 2020-04-02.
- ↑ NianticHelp. To add more context, we have adjusted rankings and ratings from GO Battle League's preseason for Season 1. Regardless of your preseason rank, you should now be rank 1.. Twitter. Retrieved on 2020-03-14.
- ↑ NianticHelp. Trainers, for the next 30 days, we will be making the following changes for GO Battle League and Trainer Battles with friends:. Twitter. Retrieved on 2020-03-14.
- ↑ GO Battle League temporary updates. Pokémon GO Live. Retrieved on 2020-03-24.
- ↑ NianticHelp. Trainers, we're excited to introduce a new battle until you win mechanism in GO Battle League! If you lose all 5 matches in a set, you can continue playing in that same set until you win a match for up to 15 losses, after which you'll move to the next set.. Twitter. Retrieved on 2020-04-08.
- ↑ PokemonGoApp. #GOBattle League Season 2 has been delayed. See here for more info: . Twitter. Retrieved on 2020-05-14.
