The Orioles' young hitters are getting worse, and the league's are not.

Every fan base tells itself the same story about a young player having a bad year. He is still learning. The league adjusted and he will adjust back. Look at the age on the back of the card.

It is usually true. That is what makes it dangerous.

I wanted to know whether it is true here, so I built the only test that can answer it: compare each young Oriole not to his own past, but to every other hitter who was the same age that season.

My thesis going in, stated plainly:

1. The young core has stalled, and it is not just the eye test.
2. It is worse than normal variance for players this age.
3. It is happening to the players the organization spent the most on, not to everyone.

Two of those held up. The third held up in a way I did not expect, and it points somewhere uncomfortable.

First I needed to know what normal looks like. So I took every hitter in baseball with 250 or more plate appearances in consecutive seasons from 2024 through 2026, and measured how his OPS changed, grouped by the age he entered the season at.

This is the shape everyone assumes and almost nobody checks. Through the early twenties the median hitter gets better and most of the cohort improves. By the early thirties the median falls and most of the cohort declines. The cliff is real, and it arrives later than fans think.

Which means a decline at 23 or 24 is not a player being young. It is a player going the wrong way while his peers go the right way.

Now put the Orioles’ young hitters against that curve.

Four of the six measurable transitions sit in the bottom quarter of their age group.

Gunnar Henderson did it twice. Tenth percentile at 23, twenty-second at 24. In the two seasons a hitter is most likely to arrive, he went backwards further than three quarters of the players his own age, then did it again.

Colton Cowser’s 2025 was the sixth percentile of every age-24 hitter in the sample. Ninety-four percent of players his age had a better year than he did.

There is an obvious out here, and it is the one every fan reaches for. Batted balls find gloves. A .280 hitter has a .240 season and nothing is actually wrong.

Statcast can test that directly. Expected wOBA is built from how hard and at what angle a hitter hits the ball, not from where the ball landed. If the expected number holds while the real one falls, it was luck. If both fall, the hitting got worse.

Henderson’s expected wOBA went .374, then .341, then .322. It fell by fifty-two points over two seasons, almost exactly tracking the drop in his real production. The contact quality went with it.

Cowser’s expected numbers tell the same story through 2025 and then partially recover, which matches his cohort rebound.

Holliday and Mayo come out differently. Both improved their expected numbers across the full window. Whatever is wrong here did not reach them, and pretending otherwise would be the easy version of this piece.

Here is where my third thesis point held up in a way I did not want.

The players going backwards are Henderson, Cowser and Holliday: the number one overall pick, the fifth overall pick, and the other number one overall pick. The players going forwards are Mayo, a fourth-round pick, and Samuel Basallo, an international signing.

That is not a story about young hitters. Every one of these players is young. It is a story about the ones the organization invested the most in and expected the most from.

I can think of three explanations and I cannot separate them with this data:

• Development. Something about how these hitters are coached here is not taking, and it shows up most in the players given the least runway to fail quietly.
• Deployment. The Orioles’ own lineup data showed the premium arrivals holding stable top-of-the-order jobs through long slumps while others were moved around. Protecting a struggling hitter in a role is a defensible choice and it is not the same as developing him.
• Regression to a truer level. Henderson’s .893 at 23 may simply have been the outlier, and everything since is the real player finding his level. If that is true it is the most expensive possibility of the three.

The Orioles spent a decade acquiring the right to draft players like this. The bet was never that they would be good immediately. It was that they would get better.

Two of them are getting better. The three the whole plan rested on are not, and in the one case we can test cleanly, it is not luck.

Tell me where I have this wrong. If you think Henderson’s 2024 was the aberration rather than his 2026, make the case, because that is the version of this where the Orioles are fine and I would genuinely like to believe it.

Definitions used: age_cohort_change@v1 · expected_woba_gap@v1 · Each links to the exact filter, the thresholds, and the argument against them.

Sources: MLB Stats API for season hitting, all clubs 2024-2026; Baseball Savant for expected statistics. Cohort built from every hitter with 250 or more plate appearances in consecutive seasons. The Bottom Row No. 005 · bottomrowsports.substack.com · Written by a fan, for an argument. Bring your own numbers.