Outside T-Mobile Park, at the corner of Edgar and Dave, a small crowd gathers.
They wear well-loved King’s Court t-shirts, increasingly esoteric shirseys and BreakingT collabs whose pit stains betray their age. One of them has on a few different variations of leopard print, some are festooned in arboreal paraphernalia, another a MacDougall Bats polo. There is no evidence of Night Court, but there are many pairs of glasses.
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“One of us, one of us, one of us!” they chant gleefully as the 6’5” figure of Ryan Loutos disappears inside the ballpark.
A computer science graduate from Washington University in St. Louis, where all the best, brightest and most beautiful people go to school (Hi Claire! I love you! Does this very public shout-out make up for the fact I’m very delinquent in returning your phone call?), Loutos signed as an undrafted free agent with the Cardinals in 2021. His fastball velo bloomed from 92 to 97 MPH in their system, and he made his big league debut in 2024. Midway through 2025, the Cardinals designated him for assignment, then sent him to the Dodgers for cash. Shortly after that, Los Angeles DFA’d him and the Nationals picked him up. 2025 produced an objectively catastrophic performance from Loutos, but in November the Mariners scooped him up off waivers.
Every time Loutos has surfaced in the news, there’s been some heralding of his non-baseball skills. Namely, he’s a big ‘ol nerd. He used his computer science degree to develop a pitching analytics software while pitching for the WashU bears, and before the Cardinals signed him he had plans to accept a job offer as a software engineer in Chicago. The winter after joining the Cards, Loutos partnered with their front office to create a similar software to be used throughout their minor league system (called “Chirp,” which is extremely cute). He also became the de facto tech support in the locker rooms.
“I’ve definitely been that guy for all my minor league teammates,” Loutos told MLB.com after he was promoted back in 2024. “The players will come to me first because I’m their friend and they’re comfortable around me. Because I know the ins and outs of the app, I was always the guy players would go to. The number one question was always ‘Why is my velocity so low on here?’. But it was good to know the app and be able to help out.”
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He’s since worked in the offseason with Premier Pitching, helping them develop similar software for pitching analytics. With the Mariners’ reputation as a pitching analytics powerhouse, Loutos is a natural fit, particularly in continuing to build connection between the front office and the data they generate and the players who are producing the, ahem, raw material.
To be honest, I couldn’t find much of notable interest in his pitching profiles, but that doesn’t mean it doesn’t exist. I queried John Trupin, who, as podcast listeners know, is incapable of delivering a succinct answer. He noted that Loutos’ four-seamer is similar to Justus Sheffield’s (oof) in that it has hardly any spin to it, and that his sweeper has scarcely any sweep, presenting so convincingly like a 12-6 curveball that some write-ups on him note a curve as part of his arsenal.
A little more from John: “My initial sentiment on Loutos is that there’s a little Taylor Williams in him – his sweeper and slider are both astonishingly close to purely vertical/12-6 curveballs that do not actually sweep. For Williams that was a “gyro” slider that didn’t break but just dropped and spun like it should break. His four-seamer is really just a sinker, I’m struggling to ID who it reminds me of. They may try to get him to expand use of his split-change, he’s been working on it for a couple years.”
From a pure pitching standpoint, Loutos is clearly just another arm for the pile. But with his analytical knowledge and background, there could be some interesting ways for him to grow within the Mariners system. (And a shared high school alma mater with skipper Dan Wilson certainly doesn’t hurt either!)
