Niantic has detailed GO Battle League: Hidden Gems for Pokémon GO. Read on below to learn more: GO Battle League: Hidden Gems update Trainers, GO Battle League: Hidden Gems is almost here! GO Battle League: Hidden Gems start date, rank resets, and end-of-Season rewards GO Battle League: Hidden Gems will start on Thursday, June 1, … Continue reading GO Battle League: Hidden Gems now running in Pokémon GO, Great League and Summer Cup: Great League Edition formats now underway until June 8 at 1 p.m. PT