This article was originally published on www.si.com/mlb/padres as Padres Could Shift Mason Miller to Starting Pitcher. The San Diego Padres traded a massive prospect package to acquire relief pitcher Mason Miller, a true flame-throwing arm.

MLB Trade Deadline 2025: Instant Takeaways to Padres Landing Mason Miller originally appeared on Athlon Sports. The surging San Diego Padres entered the 2025 MLB trade deadline with three All-Star relievers already in their bullpen. They now have a fourth.

The San Diego Padres have landed closer Mason Miller and left-handed starting pitcher JP Sears from the Athletics in a blockbuster trade deadline deal, the team announced Thursday. The return includes top shortstop prospect Leodalis De Vries, who ranked No. 3 on CBS Sports' midseason rankings.