Grading every Padres move at the 2026 MLB trade deadline as A.J. Preller bets big on October

The Padres spent deadline day making sure they reeled in their starting rotation. Fresh off winning eight of nine games and climbing within one game of a NL Wild Card spot, A.J. Preller did what he always does. He shoved more prospects on the table and bet on October.

They added Robbie Ray, Casey Mize, Gage Workman and Hunter Stratton, transforming an injury-ravaged rotation without breaking up its bullpen. The Padres are better today than they were before the deadline. That’s not complicated. How much they paid is where it’s interesting. 

Grading every Padres move at the 2026 MLB trade deadline

Padres acquire Robbie Ray and cash from Giants for Miguel Mendez and Joniel Hernandez

Trade grade: C+

Let’s start with the questionable one. Ray has been excellent for the Giants, posting a 3.08 ERA while dominating over his final eight starts before the trade. The problem is everything Preller surrendered for a 34-year-old rental.

Miguel Mendez and Joniel Hernandez were both top 10 prospects in San Diego. Mendez possesses one of the biggest arms in the organization, while Hernandez added another promising shortstop to their seemingly endless supply.

Ray unquestionably improves the rotation. He also doesn’t have a great postseason track record. The Padres are still betting on him giving them a boost down the stretch. He also isn’t the overpowering strikeout machine who won the 2021 AL Cy Young Award. The Padres paid for what they need him to be over the next two months, not necessarily what he is now. Moving Mendez wasn’t a shocker, but at the time it felt like the Padres would not touch their top 3 prospects. We later learned that wasn’t going to be the case. 

If Ray helps deliver in the postseason, nobody will complain. But it’s hard not to see this as Preller paying an intradivision tax. If he struggles and walks in free agency, this trade could age poorly.

Padres acquire Casey Mize and Gage Workman from Tigers for Kash Mayfield and Jackson Wolf

Trade grade: A-

This was their biggest win, though the price was still steep. Mize arrives with a 2.70 ERA through 16 starts and immediately gives San Diego another pitcher it can trust down the stretch.

Put him alongside Michael King and Ray, and suddenly the Padres have the bones of a legit playoff rotation. But let’s not pretend Preller found Mize on clearance. Mayfield was their No. 2 prospect and arguably the best pitching prospect left in an already-thin system. That’s another painful price for a rental. Still, Mayfield and Mendez weren’t graduating soon, and Preller is still in win-now mode.

This grade may be curved slightly because the Mize deal came after the Friars had already acquired Ray. Adding Mize gave the Padres a formidable top three alongside Ray and Michael King. If Nick Pivetta and Joe Musgrove return — or even if only one makes it back — they could have one of baseball’s deepest rotations down the stretch.

Padres acquire Hunter Stratton from Pirates for Andrew Moore

Trade grade: B

This wasn’t designed to sell more tickets. They essentially added insurance. That’s perfectly fine and not every deadline deal needs its own soundtrack.

Final grade for the Padres’ 2026 MLB trade deadline moves: B+

The Padres addressed their biggest weakness and kept Mason Miller and Adrian Morejon, ensuring the back end of the bullpen remains intact. The Padres’ rotation entered the deadline with a 4.66 ERA, fourth worst in baseball. Standing pat wasn’t an option. 

They still didn’t add the left-handed bat they needed, both starters are rentals, and their farm system somehow got worse. But we grade the deadline by whether the major league team improved, and this one clearly did.

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