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 Giants have struggled since trading for Rafael Devers in June, and that put them in "soft sell" mode. They got a respectable return from the Mets for Tyler Rogers, and they sent closer Camilo Doval to the Yankees for four prospects. Then in a bit of a surprise they flipped outfielder Mike Yastrzemski to the Royals.

Preller brought flame-throwing closer Mason Miller along with starter J.P. Sears to San Diego in a deal with the A’s, trading away No. 3 overall prospect Leo De Vries and three other top-20 prospects in the Padres’ system.