Padres general manager AJ Preller swung big at the MLB trade deadline, adding Mason Miller to an already loaded San Diego bullpen.

Major League Baseball's 2025 trade deadline is on Thursday, July 31st, at 6:00 P.M. Eastern Standard Time, or 3:00 P.M. Western. Once the deadline passes, no MLB trades can occur, though sometimes a deal will be announced shortly after the deadline passes. But, as long as it's submitted to MLB before the deadline, a deal can pass.