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.

The Athletics lost one of the best relievers in baseball, but acquiring the No. 3 overall prospect for a reliever is a home run.

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.