Connor Wietgrefe is making it hard for the Pirates to keep pretending he’s just another name in the system.
In a year when Pittsburgh’s farm doesn’t have the same overflowing buzz it has had in the past, the left-hander in Indianapolis has started to stand out anyway. Wietgrefe was named Player of the Month for July, and the numbers back it up: a 4-2 record, a 1.98 ERA, a 0.96 WHIP, and 25 strikeouts across 36 1/3 innings.
He has kept it rolling beyond that, too. In Triple-A, the 24-year-old owns a 2.61 ERA over eight starts and 48 1/3 innings. He opened the season at Double-A Altoona, and his combined line now sits at a 3.13 ERA over 115 innings.
The Pirates took Wietgrefe in the seventh round in 2024, and one of the best snapshots of his year came on July 12 against Toledo, when he spun eight shutout innings, gave up one hit, and didn’t walk a batter.
He’s been on the radar for a while because of how he closed 2025, but he still hasn’t gotten much attention outside the organization. MLB Pipeline had him ranked 29th in Pittsburgh’s system. Even so, he’s starting to look like more than a depth arm.
That matters because the Pirates’ rotation is getting stretched. Paul Skenes opened the year in vintage form, but he hasn’t looked like Skenes for a while. Mitch Keller was expected to be the model of steadiness before landing on the IL, but 2026 has been anything but smooth for him.
Pittsburgh has managed to stay afloat by piecing together enough innings from a rotating cast, but the workload is starting to loom for Braxton Ashcraft, Bubba Chandler, and Jared Jones. Ashcraft may already be feeling it.
He entered the year with a career-high of 118 innings last season, has dealt with injuries for much of his career, and is already up to 127 1/3 innings. His July ERA was 7.78, a clear sign the tank may be running low.
Chandler is approaching his own limit, while Jones is returning from Tommy John surgery and has to be handled carefully.
And this isn’t just about surviving the final weeks of the regular season. If Pittsburgh reaches the playoffs, those innings pile up even more for young starters who are already carrying a heavy load.
That’s the opening for Wietgrefe. He could come up and soak up innings, help keep the Pirates competitive, and spare some wear and tear on the arms they’ll need most later. He wasn’t a big-name prospect out of Minnesota, but he came with a reputation for polish, and that shows up in how he pitches.
His approach is built on zone command and location, with a five-pitch mix that includes a low -90s fastball, changeup, cutter, slider, and sweeper. That kind of arsenal gives him ways to keep hitters guessing.
He also brings a different look. In a rotation full of power arms, the lefty offers a contrast, and that alone can matter. The bigger question is whether he can keep doing what he’s done in Indianapolis: miss enough bats, pound the strike zone, and take some pressure off a staff that could use the help.
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