
0
Mason Miller Is Blowing Everyone Away
April 17, 2026
Posted 3 hours ago by
I have always found the starter-into-closer pipeline to be demoralizing. Per baseball truisms, even the best reliever would be a starter if they were only, by certain definitions, better. Moving a starter to the pipeline is so often the last-ditch move of teams that do not know how to develop their pitchers. I hope Roki Sasaki finds his groove; I hope that closer-into-starter conversion or reconversion projects go well.

That said: Mason Miller, who was traded from the Athletics to the San Diego Padres last year for a whopping four prospects, was practically engineered in a lab to be the exception. The closer is a position in baseball where the best players are, value and contracts and whatever bullshit aside, composed of pure, distilled coolness. It is a different skillset from that of the starter. A closer—who does not have to worry about pitch count, or keeping the arm going through five-plus innings, or the third time through the batting order—is more concerned with quality, delivering more concentrated nastiness on the pitch-to-pitch level than starters can. For Miller, this is best exemplified by his average four-seamer speed going up a full three miles per hour after he moved to the bullpen. Also, now he gets a cool walk-out ritual (depending on one's definition of cool). It is fine, even appealing, that Miller's arsenal is composed of only an absurd fastball, an absurd slider, and an occasional changeup to lefties, thrown so infrequently that the pitch's heat map so far this season resembles six little bullseye targets. A closer with Miller's stuff does not need more pitches than that. His fastball sits at 101.4 mph and touches 103, which does legitimately make his 95.8-mph change-up a change-up. So far this season, 24 pitches have been thrown above 102 mph. One was thrown by Baltimore Orioles reliever Ryan Helsley; six have been thrown by Los Angeles Dodgers reliever Edgardo Henriquez (rocking, despite the stuff, a 5.40 ERA). Miller threw the other 17.
Defector
Coverage and analysis from United States of America. All insights are generated by our AI narrative analysis engine.