THE PADRES AND GM A.J. PRELLER  A.J. Preller led off our list of the MLB's biggest deadline winners and losers. The Padres' veteran GM was a slam dunk deadline winner after acquiring former Athletics closer Mason Miller (and lefty JP Spears) for four prospects that includes Leo De Vries,

San Diego shockingly acquired 100-mph flamethrower Mason Miller from the A’s on Thursday in a massive move ahead of the MLB trade deadline, The Post’s Jon Heyman confirmed. San Diego is also receiving former Yankee lefty JP Sears, while the A’s are receiving four players, including the No. 3 prospect in the sport in shortstop Leo De Vries.

The Astros were sniffing around the Dylan Cease market at the trade deadline, but there is one player they refused to give the Padres.