The Brewers announced Wednesday that they’ve selected the contract of righty Connor Sadzeck from Triple-A Nashville. Infielder Keston Hiura has been optioned to Nashville to open a spot on the active roster. Milwaukee already had an open 40-man spot after designating Chi Chi Gonzalez for assignment last night.
A promising prospect with the Rangers earlier in his career, the now-30-year-old Sadzeck hasn’t appeared in the big leagues since 2019. Injuries, including Tommy John surgery early in his minor league career and a flexor mass issue back in 2019, have slowed the right-hander and kept him off the mound for significant portions of his career.
When healthy, Sadzeck is a legitimately intriguing arm who boasts a triple-digit heater, impressive strikeout abilities and, as is often the case for flamethrowers like this, some problematic command issues. He’s pitched just 33 Major League innings and boasts a 2.18 ERA but a concerning 17.4% walk rate in that time. Sadzeck is currently sporting an outstanding 0.86 ERA and 30.7% strikeout rate in 28 Triple-A innings, however, and this year’s 10.5% walk rate is more manageable than several of his prior seasons.
Hiura, meanwhile, has gone from former first-round pick and potential building block to a defensively limited slugger who’s regularly optioned by the Brewers. He’s hitting .238/.354/.451 this season — solid overall production — but has also yet to rectify the alarming strikeout issues that have plagued him throughout his career. Hiura has fanned in a sky-high 43.8% of his plate appearances this season, making even that modest .238 average unsustainable. (He’s currently benefitting from a .412 BABIP.)
That said, the decision to option Hiura couldn’t have been an easy one. He’s been on a tear at the plate over his past 12 games, batting .324/.435/.595 with three long balls and a double in that time. For now, Hiura will return to Nashville and continue working to improve his bat-to-ball skills and overall plate discipline. In all likelihood, he’ll get another big league look (or multiple looks) between now and season’s end.

Those numbers for Keller have also been fairly consistent year-over-year, with his strikeout rate always falling between 16.3% and 19.6%, his walk rate between 7.8% and 10.4%, with his grounder rate between 47.8% and 54.4%. But as a ground ball pitcher, the one thing that’s not consistent is BABIP, or batting average on balls in play. Strikeout pitchers naturally have more control of their outcomes as they aren’t reliant on batted balls finding gloves and being fielded cleanly. A pitcher like Keller can be helped or harmed by randomness in this regard. For instance, in 2020, Keller’s BABIP dropped to .233, about 50 points below his previous seasons. That led to a career-best 2.47 ERA that year. However, the wheel of fortune spun him round the other way in 2021, as his BABIP shot up to .347 and took his ERA to 5.39.