Usually, roster moves are announced/leaked by predictable sources. If it is big-time news, national reporters like Jeff Passan, Ken Rosenthal, or Mark Feinsand will get the word out. In the case of the Houston Astros, the less dramatic, more Astros-centric news will come from folks like Chandler Rome, Brian McTaggart, or Ari Alexander, and sometimes no one knows anything until the Astros put out a statement themselves. However, word on a roster move involving Jon Singleton came from an unlikely source who definitely would know what is up.
After getting a real opportunity in 2024 and failing to capitalize on it thanks to ongoing issues making contact, Singleton had initially been cut loose before getting re-signed by the Astros on a minor league deal.