Is this the latest Brewers pitching success story?

Folks, the Brewers have done it again.

That’s what it looks like, anyway. A Milwaukee pitching lab that has consistently churned out productive starters (such as Jacob Misiorowski, Quinn Priester and Chad Patrick just since 2025) appears to have mined another diamond.

It’s still early, but left-hander Kyle Harrison -- a longtime MLB Pipeline Top 100 prospect with the Giants -- is putting it all together after being acquired by the Brewers in an offseason trade with the Red Sox. Ahead of Saturday’s start against the Nationals in Washington, D.C., Harrison has been stellar with a 2.28 ERA and 30 strikeouts in 23 2/3 innings. In his most recent outing against the Pirates, he struck out a career-high 12 in six scoreless innings, allowing just one hit and one walk.

Here’s what makes Harrison a likely candidate to be the Crew’s next pitching success story.

Taking a chance

Not many of the Brewers’ top pitchers have been highly pedigreed prospects who made an immediate, smooth transition to the Majors. Harrison certainly was highly regarded as a Minor Leaguer -- he made the Top 100 Prospects list in 2022, 2023 and 2024, ranking as the top lefty pitching prospect in baseball before ’23 -- but he wasn’t the top-of-the-rotation hurler the Giants envisioned.

Instead, the lefty had a 4.48 ERA in 39 games for San Francisco from 2023-25 before being traded to the Red Sox last June in the Rafael Devers deal. He pitched just three times for Boston in ’25 (including one relief appearance) and was quite solid, posting a 3.00 ERA and striking out 13 in 12 innings.

But the Red Sox moved on from him during an offseason overhaul of their rotation, shipping Harrison to the Brewers in a six-player deal that sent third baseman Caleb Durbin to Boston. For Milwaukee, the trade was a gamble predicated on Harrison’s chances of becoming a reliable arm in the rotation.

Of course, the club had reason to believe.

“The Brewers have been great at having those things happen,” Milwaukee manager Pat Murphy told MLB.com in 2024.

Making improvements

Are those same positive developments happening with Harrison, too? It’s early, but things sure look that way.

Whether it’s pitch movement, command or quality of contact, Harrison has shown clear improvement in 2026. His 2.28 ERA so far is impressive, but so is his 3.43 expected ERA, per Statcast -- comfortably a career best. While Harrison might not sustain his current level of success, nothing indicates he will suddenly fall off dramatically.

Harrison’s 31.3% strikeout rate is a great sign. Among the 168 pitchers who entered Friday having faced at least 75 batters, Harrison’s K rate ranked 10th. First and second? Brewers teammates Aaron Ashby (37.5%) and Misiorowski (37.2%).

In 2026, Harrison is drawing more swings and misses on his four-seam fastball, by far his most-used pitch. Only two starters -- Misiorowski and the D-backs’ Ryne Nelson -- have higher four-seam usage rates than Harrison’s 59.2% clip, but the lefty is making it count. The whiff rate on his fastball has jumped to 32.1% this season compared to 26.2% in 2025, and opposing hitters’ chase rate on Harrison’s out-of-zone offerings has gone up, too.

With an average velocity of 94.6 mph, Harrison’s four-seamer isn’t especially fast, but it has strong horizontal movement -- 3.2 inches more than comparable four-seamers in 2026. The vertical drop on his changeup is 3.4 inches better than comparable, up a good ways from 2025 (-0.8 inches).

This season, Harrison has scrapped a cutter he rarely threw in 2025 (3.7% usage rate) and only featured against right-handed batters. At the same time, he sharpened a slurve that was hit hard -- opponents batted .289 with a .535 slugging percentage against the pitch from 2023-25 -- and made it a weapon. This season, batters are just 2-for-22 against the pitch with a pair of singles and seven strikeouts.

A much-needed arm

After some unfortunate recent developments for the Brewers, Harrison’s success has become crucial for the club.

Milwaukee placed right-hander Brandon Woodruff on the 15-day injured list on Friday with right shoulder inflammation after the veteran’s velocity was down in Thursday’s start. Also Friday, Misiorowski left his start against the Nationals -- after 5 1/3 no-hit innings -- with a right hamstring cramp.

The injuries will further test a Brewers rotation already missing Priester (thoracic outlet syndrome), who made his second Minor League rehab appearance on Friday for Triple-A Nashville. Of course, Milwaukee’s pitching depth has long been a strength: Pitchers such as Logan Henderson, who posted a 1.78 ERA in five starts as a rookie last season, are available in the Minors should the Crew need a replacement.

Now, Harrison is the latest product of the Brewers’ system to enjoy success in the Major Leagues. Whether it will last remains to be seen, but Milwaukee has to be happy with the lefty’s production to this point.