Here's the A's Spring Breakout roster (Sun., 1 p.m. PT)

Before the top prospects in the Athletics' organization head out from Spring Training in Arizona to begin the regular season at their respective levels, they’ll participate in Spring Breakout, a series of exhibition games featuring the top prospects in each Major League club’s farm system. Here is everything to know about that game, which will feature the top young stars from the A’s taking on the elite young talent from the Brewers.

What is Spring Breakout?

In 2026, MLB Spring Breakout will again be a four-day event showcasing baseball’s future -- the current stars of Minor League Baseball – in 16 exhibition games played between teams composed of each MLB organization’s top prospects. The third edition will be held from March 19-22 at Grapefruit and Cactus League stadiums during Spring Training.

In 2027, Spring Breakout will be expanded into a single-elimination tournament format, with champions being crowned in both the Grapefruit and Cactus leagues.

When is the Athletics' game?

The A’s Spring Breakout game is scheduled for Sunday, March 22, at Hohokam Stadium against the top prospects from the Brewers’ system. First pitch is set for 1:05 p.m. PT.

How can I tune in?

MLB.TV, MLB.com, MLB App, MLB Network, Amazon, Gameday

Notable position players

The roster is headlined by Leo De Vries, who ranks as the A’s No. 1 prospect and No. 4 overall by MLB Pipeline. Acquired midway through last season at the 2025 Trade Deadline as the headlining prospect in a package from the Padres for Mason Miller and JP Sears, it only took De Vries 15 games in his new organization to earn a promotion, moving up from High-A Lansing to Double-A Midland on Aug. 18. From there, the 18-year-old shortstop helped Midland to the Texas League Championship Series, batting .281 with a .910 OPS in 21 games for the Rockhounds.

Outfielder Henry Bolte (ATH No. 5 prospect) will get to showcase his impressive power-speed combo. Last season, Bolte pushed himself onto the precipice of the Majors. He began at Double-A Midland, and after an impressive first 80 games in which he slashed .278/.378/.424 with 25 extra-base hits and 31 stolen bases, Bolte was promoted to Triple-A Las Vegas, where he hit .300 with an .838 OPS, 10 extra-base hits and 13 stolen bases in 34 games.

Two-way Japanese teenage star Shotaro Morii (No. 13) is also expected to see some action. He is likely to begin the 2026 campaign at Single-A Stockton, where the A’s plan to allow him to play second base a few days per week and pitch once per week.

Notable pitchers

Jamie Arnold (ATH No. 2/MLB No. 41) headlines the pitching group. Drafted 11th overall by the A’s in the 2025 MLB Draft, the 21-year-old left-hander has impressed manager Mark Kotsay this spring with his advanced arsenal of pitches. Despite not having played a Minor League game yet, there is a buzz building around Arnold that he could potentially debut in the Majors at some point this season, perhaps taking a Nick Kurtz-like fast track through the Minors.

Roster details

Spring Breakout rosters were constructed in two phases in 2026. Clubs initially submit preliminary 40-man player pools on Thursday, March 5, which were then be pared down to the official rosters on March 18. The rosters were assembled using MLB Pipeline's Top 30 Prospects lists plus additional prospects submitted by the club.

Gameday Roster (Athletics Top 30 Prospects list):

PITCHERS (10)
Jamie Arnold, LHP, No. 2/MLB No. 41
Corey Avant, RHP, NR
Steven Echavarria, RHP, No. 16
Jackson Finley, RHP, NR
Kenya Huggins, RHP, No. 24
Cole Miller, RHP, No. 25
Kade Morris, RHP, No. 12
Eduarniel Núñez, RHP, No. 22
Tzu-Chen Sha, RHP, NR
Zane Taylor, RHP, No. 19

TWO-WAY PLAYERS (1)
Shotaro Morii, SS/RHP, No. 13

CATCHERS (3)
Cole Conn, C, NR
Davis Diaz, C, NR
Dylan Fien, C, NR

INFIELDERS (6)
Bobby Boser, 3B/SS, No. 30
Leo De Vries, SS, No. 1/MLB No. 4
Joshua Kuroda-Grauer, SS, No. 10
Edgar Montero, SS, No. 11
Drew Swift, INF, NR
Tommy White, 3B, No. 9

OUTFIELDERS (7)
Henry Bolte, OF, No. 5
Breyson Guedez, OF, No. 23
Nate Nankil, OF, No. 26
Ryan Lasko, OF, No. 21
Cameron Leary, OF, No. 29
Junior Perez, OF, No. 20
Devin Taylor, OF, No. 8