The Cardinals’ offseason overhaul brought in plenty of new faces, but Blake Aita is the kind of arm that can quietly become a real piece of the puzzle if the development clicks.
Aita, a right-handed pitcher acquired from the Red Sox, said the trade caught him off guard. He was in Mexico with his family and girlfriend when the call came in.
“It was honestly a pretty big shock at first, not because I didn't think I was able to get traded but because I was on vacation in Mexico with my family and my girlfriend,” Aita said. “We were at a Japanese restaurant and the Red Sox farm director gave me a call, and I knew I was getting traded.”
The move sent him into a new system, but also into a new level of competition. Aita began the season with the Peoria Chiefs, the Cardinals’ High-A club, and has since moved up to Double-A Springfield.
He said the jump has been a welcome one. “The transition has been good,” said Aita.
“You can tell there's more of an approach to how they take their at-bats. For me, there's less swing and miss in two-strike counts, there's more battle, but there isn't a point where I feel outmatched.”
His first outing after the promotion came against the Tulsa Drillers, the Los Angeles Angels Double-A affiliate, and the assignment was no soft landing. He was immediately facing three top-50 prospects in baseball: Zyhir Hope, Mike Sirota, and Joseu De Paula.
“Hope hit a homer off me, Sirota went 1 for 3, and I struck out De Paula twice. Those are the hitters you want to face, but that was definitely the biggest switch just seeing the talent at the Double-A level.”
Through 75 innings between Peoria and Springfield, Aita has posted a combined 3.72 ERA with 80 strikeouts. His strikeout rate has climbed from 18.3% in 2025 to 24.8% in 2026, a jump he’s clearly proud of. Before the trade, he finished 2025 with a 3.98 ERA and 99 strikeouts in 115.1 innings for Boston.
Aita has also spent the year sharpening the arsenal that made him attractive in the first place. He’s known for a deep mix and for being able to take the ball every week in the minors.
Over the offseason, he put extra work into his splitter. “I added (the splitter) in last year in start number nine (with Boston),” said Aita.
“I call it a splitter, I call it a split-change, but it's basically a changeup. I'm a big supinator, and the Red Sox gave me this grip where I split my fingers a little bit.
The way it works is it comes off my middle finger at the right spot to make the ball go down a little bit more.”
He also worked on his curveball, first trying to give himself a true north-south pitch and then leaning into more shape and movement to help against left-handed hitters. Even with a fastball that isn’t overpowering, Aita leans on variety - a sinker, cutter, and four-seamer - to keep hitters guessing. He’s hoping offseason work and mechanical refinement can help him add velocity.
“Now that I'm in Double-A, I want to continue attacking hitters with aggression. I want to continue working on everything, really. There's always room for improvement.”
The Cardinals’ move to bring him in also put him on the same organizational path as Brandon Clarke, another former Red Sox pitcher and once a roommate of Aita’s in Boston’s minor-league system. The two were acquired in separate offseason deals, and Aita admitted he briefly wondered whether they’d get the chance to keep growing together.
“I will be in his wedding, and he will be in mine next year. We talk two to three times a week, and I can't wait for him to get up here (to Springfield),” said Aita.
“It all depends on who you get traded for and how early in your career where you get traded, but there was never really a feeling of doubt with this trade.”
Clarke was moved first, but the idea of reuniting in the same clubhouse is still there. “It would be really cool if we got drafted by one team and we come to another team together and work our way up to the show here and win in St.
Louis,” Clarke told the St. Louis Post-Dispatch this past offseason.
They’re not at the same level yet. Clarke, 23, is working back after a procedure that addressed blisters and numbness in his fingers, and he’s still a couple of levels away from Springfield. Even so, he’s showing excellent stuff in Low-A Palm Beach.
Aita also came away impressed with the Cardinals’ development setup, especially when comparing it to what he experienced in Boston. “The Red Sox are a big market team and get a lot of pitchers, especially pitchers with traits.
They had a less individualized way of programming than St. Louis,” said Aita.
“I think I fit a lot better in the development side of things over here with the Cardinals with who I am as a player. When it comes to in-season development, with the Red Sox it was very metrically driven.
I'm a big competitor, so there's a time and a place when it comes to performance-driven analysis. With the Cardinals we look at how you pitched, your process, how much were you in zone.”
He also had praise for the Cardinals’ new facilities in Jupiter, Florida, calling the weight room the biggest he’d ever been in and describing the dining hall, the “Bird Feeder”, as “sick”. He called the whole setup top-tier.
For now, Aita looks like exactly the kind of arm the Cardinals want to mold: versatile, coachable, and already making strides. With more velocity on the offseason to-do list and a system he believes fits him, he’s a name worth tracking closely.
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