Joseph Dzierwa’s first full pro season did exactly what the Orioles have been hoping their pitching prospects would do for years: it made people pay attention for the right reasons.
The 6’8” left-hander, taken in the second round of the 2025 draft out of Michigan State, didn’t need long to announce himself. After the Orioles gave him some spring training work early in the year, they sent him straight to High-A Frederick for his first real action, skipping the common post-draft debut entirely. From there, Dzierwa went right to work.
His introduction to the minor league scene was loud. In his first start, he struck out nine over six innings against Texas’s High-A affiliate while throwing just 79 pitches.
He followed that with a seven-inning outing, and by mid-May he had already turned in three separate games with nine strikeouts. The punchouts were there, but so was the control.
He walked one or fewer batters in seven of his eight starts with Frederick, and by the time Baltimore moved him up to Double-A, he was sitting on a 2.21 ERA and a 0.811 WHIP.
That promotion was aggressive for a pitcher who had just been drafted last year, but Dzierwa handled it. Over 18 games with Chesapeake, he posted a 2.29 ERA, still striking out more than a batter per inning. The numbers weren’t quite as sharp under the hood as they had been at High-A - the strikeout rate dipped against better competition, and hitters did a little more damage - but the results were still strong enough to make you wonder why the Orioles didn’t send him to Triple-A for a few late-season starts.
Dzierwa’s work earned him a spot on the All-Star Futures Game roster for the 2026 season. Anthony Eyanson, who would later become an Orioles acquisition, was one of his teammates in that game, and the two were back together at Chesapeake for Eyanson’s final six starts.
The industry took notice as well. MLB Pipeline slotted Dzierwa at No. 86 on its end-of-season list, making him the third-highest-ranked of five Orioles in that outlet’s top 100.
Its report praised his ability to limit walks, command his full arsenal, and work the strike zone with precision. Pipeline’s read was clear: Dzierwa has size, two pitches that could be plus, and enough command to make him a very safe bet to start in the majors, with his breaking ball development likely deciding whether he settles into the middle or back end of a big league rotation.
That kind of language matters. It’s strong, but it’s not the language you use when you think a pitcher is headed for ace territory. Dzierwa’s fastball doesn’t come with the kind of velocity that overwhelms hitters, and there are still questions about whether his breaking stuff will be enough against better bats.
FanGraphs offered a similar take. They had Dzierwa at No. 12 on their preseason-but-posted-in-May list and saw him as a lefty whose changeup command should carry him to the majors.
Their view was more practical than flashy: a “quick-moving no. 4/5 starter.” They also pointed to the same concerns, including the breaking pitch and whether his height translates into the kind of extension that would make his fastball play up.
That’s not a glamorous prospect label. A no. 4/5 starter sounds more like dependable rotation depth than future headline material. But it also describes a useful major league pitcher, and Dzierwa’s season made a strong case that he can become exactly that.
Opponents hit just .186/.246/.289 against him this year. For a 22-year-old in his first full professional season, that’s as good as it gets.
For the Orioles, it’s a reminder that sometimes the best pitching prospect stories are the ones that don’t end in disappointment. If Dzierwa keeps moving like this, the organization may finally have a lefty starter worth building around in the way it has long hoped to find.
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