Last summer, amidst a down season for the Diamondbacks, Arizona took the opportunity to sell off pieces & re-fill the farm system. And on June 24, 2026, the Diamondbacks will call up Mitch Bratt, one of the prospects acquired in that mini-selloff from the 2025 season. Bratt comes up after what’s been a terrific few months in the Minors.
A Look at Bratt
When the Diamondbacks acquired Mitch Bratt last July, he was one of three pitchers picked up by Arizona for Merrill Kelly. The other two were David Hagaman and Kohl Drake, the latter of whom was recently called up by Arizona in mid-June. But while Drake was, arguably, the best prospect in that package at the time, Bratt moved up the system.
Bratt, before the trade, was in the midst of a breakout season with Double-A Frisco. The left-hander was prone to the home run ball but posted a clean 3.18 ERA with the Roughriders, posted an overall 29.3% Whiff% in the Texas League between Frisco & Amarillo, and struck out 148 batters across 122 innings at the level last season.
The 22-year-old left-hander from Newmarket, Ontario (just outside of Toronto) moved up to Triple-A Reno this season. And despite what is a hitter-friendly level, Bratt put up outstanding results. A 2.84 ERA, 42 strikeouts over 44 innings, and only four home runs allowed across 11 starts with the Aces.
Not a hard thrower by any means. Bratt’s four-seamer sat as low as 87 MPH, as high as 95 MPH, but mostly in the low-90s. Two fastballs, which have become the modus operandi for many emerging pitchers nowadays, are between the sinker and a four-seamer with more cut than riding action.
Despite the lower velocity, Bratt is not the most comfortable at-bat. He was able to induce late swings, although there’s not a lot of swing-and-miss overall in his game. More, it’s about deception than anything else with him.
More to that point, the fastball has been one of his better pitches in the all-important Whiff% category.
| Pitcher | Whiff% |
|---|---|
| 4-Seam Fastball | 22.9% |
| Curveball | 23.0% |
| Slider | 23.9% |
| Sinker | 16.7% |
| Changeup | 15.8% |
But to give an idea of how good a pitcher — not thrower — that Bratt is, he didn’t give up much in the way of barreled-up contract. A 5.2% Barrel% overall, and none of the sinker and slider.
The Diamondbacks scheduled Mitch Bratt to make his MLB debut on June 24.
Analysis
Arizona’s rotation has taken hit after hit this season. Michael Soroka and Ryne Nelson are on the injured list, and Corbin Burnes‘ return to the Majors was delayed to at least September after he suffered a teres major strain in the spring.
So, the past few days have seen the D-Backs dip into those reserves. Jose Cabrera, who, like Bratt, was called up after a good run in Triple-A, pitched well in his Major League debut against the Twins on Father’s Day. Drake, as mentioned earlier, was called up as well, although he’s yet to see MLB action and didn’t pitch well in Reno.
Now, Bratt, a five-pitch pitcher with a deep arsenal, will get his first big-league test.
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