Feedback
From Blaseball Wiki
Feedback is a type of weather first encountered in season 4. Feedback is sound distortion typically caused by output audio returning to the input of the same device. In the case of Blaseball, Feedback weather is defined as that distortion echoing on the field during a game.
In a Blaseball game that observes Feedback, there is a potential for one player from each team to get caught in the feedback, switching teams.
Instances of Feedback Switching:
SEASON 4:
Game 5, Chicago Firefighters vs Dallas Steaks