Why Robbie Ray’s arsenal could thrive with the Padres at Petco Park

It was a far tamer trade deadline than last year for A.J. Preller and the San Diego Padres, though that doesn't mean that they improved in a less meaningful way. The Friars weren't able to adequately address their offensive needs, but what they did do has put them back on the path for October success.

The much-maligned rotation got some badly-needed reinforcements in the form of Casey Mize and Robbie Ray, both of whom are rentals. For the rest of the season, they'll join forces with Michael King, which is a group that can do serious damage the postseason (and could get even better if Nick Pivetta or Joe Musgrove return to the fold before the end of the campaign).

Mize is the bigger get at this point in their respective careers, as the former No. 1 overall pick has a 2.70 ERA and 2.58 FIP across 16 starts this season. Naturally, he also came with the bigger price tag, requiring the Friars to part with 2024 first-round pick Kash Mayfield.

That shouldn't discredit what Ray brings to the table, however, The 2021 AL Cy Young may be a few seasons removed from his prime, but he remains an excellent mid-rotation starter in his age-34 season.

Robbie Ray should thrive with Padres, so long as he's pitching at Petco Park

Ray has had great success this season pitching in a pitcher-friendly park in San Francisco this year, tossing a 2.22 ERA at home compared to a 4.06 ERA on the road. That trend should continue in San Diego, as Petco Park has actually been more friendly to pitchers this year (97 park factor) than Oracle Park (98 park factor).

The southpaw's surface stats are really good, most notably a 3.08 ERA over 122.2 innings. If nothing else, his durability will be a huge asset, as he's on track to surpass the 180-inning threshold for the fourth time since the start of the 2021 season.

However, there are concerns to address. He's back to walking hitters at an uncomfortable rate (11.1%) and he no longer strikes out enough guys to make up for it. There's also the concern that he's a fly-ball pitcher who doesn't induce a lot of weak contact or pop-ups, hence why he favors stadiums with spacious outfields.

Does that mean he's liable to regress with a new team? Well, not exactly; all of his pitches besides his slider have been worth a positive run value this year, and even that outlier is responsible for a 34.5% whiff rate. A starter who pitches to contact and walks a lot of hitters is rarely a successful combo, but it helps when you've got so many above-average offerings to keep the opponent off balance.

Don't expect Ray to keep his sterling ERA intact all the way through the end of the season, but even a lesser version of what he gave the Giants in the first half would be a huge upgrade over what Craig Stammen has had to work with in 2026 thus far. Alongside King, Mize, and hopefully one of Musgrove/Pivetta, Ray should be a breath of fresh air for the Friars faithful.

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