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Offseason Prospect Review: Indigo Diaz

Wednesday, November 24, 2021

-Clint Manry

The offseason is here and it’s a perfect time to recap the 2021 season of each of the Braves top 30 prospects. In this series, I’ll discuss each player’s performance from this past year, as well as what’s needed for them to continue to rise in the organization. All rankings are derived from my most-recent 2021 Braves Top 30 Prospect List, which came out this past August. Following this series, a fresh top 30 will be constructed, primarily based on the notes I’ll provide in this column.

Previous reviews

  • Jefrey Ramos, OF (link)
  • Brandol Mezquita, OF (link)
  • Cody Milligan, 2B (link)
  • Drew Lugbauer, 1B/DH (link)
  • Tanner Gordon, RHP (link)
  • Greyson Jenista, OF/1B (link)
  • William Woods, RHP (link)
  • Darius Vines, RHP (link)
  • Cal Conley, SS/2B (link)
  • Daysbel Hernandez, RHP (link)
  • Trey Harris, OF (link)



2021 stats (A+ / AA):  45 IP, 1.20 ERA, 16.6 K/9, 3.2 BB/9, HR

Trend:  Up

Maybe you hadn’t heard of Diaz prior to the 2021 season. As a 27th round pick out of Michigan State in 2019, the kid only pitched 10.1 pro innings in the Braves system during his draft year and his 3.48 ERA with the GCL Braves wasn’t anything extraordinary. However, after the season he just had, I’m sure you’ve heard of him now.

Diaz did more than dominate in 2021 – the kid almost looked bored out there. First it was High-A Rome, where he averaged a ridiculous 18 strikeouts per nine and pitched to a 1.00 ERA over a 27-inning stretch. Then, it was Double-A Mississippi, where he not only continued with the incredibly-stingy numbers but also finished up the campaign by holding opposing left-handed batters to a .372 OPS. Platoon advantage or disadvantage, bases empty or runners on, Diaz was the same overpowering guy on the mound, which is why in the span of a few months he went from nowhere on my radar to the 19th ranked prospect in the organization. This kid put together one of the most impressive minor league pitching seasons I’ve seen in a while, and the attention will certainly be pointed his way heading into 2022.

2022 outlook

With all that said above, though, I hate to report that Diaz actually struggled mightily in the Arizona Fall League. Over the last couple of months in the desert, the 23-year-old righty pitched to a 12.79 ERA in 6.1 innings as he walked more than he struck out. And I know it’s a bit disappointing, and the rough AFL performance may be a cause for concern for some, but honestly, I wouldn’t look into it too much. For one, the sample-size is incredibly small, and though Diaz has had some control problems throughout his career, I don’t think his middling numbers with the Peoria Javelinas this fall should spoil what he accomplished during the regular season.

In fact, I’d say Diaz is a Braves prospect that’s perhaps on the cusp of contributing at the big league level – maybe even one of the closest among the system’s prospects. The kid has flown through the organization, skipping Single-A altogether, but even with only 45 innings of full-season ball under his belt, I could easily see him getting the call to Atlanta at some point in 2022.

Which means… I expect Diaz to begin the season in Triple-A Gwinnett, where he’ll not only be tested for perhaps the first time but where he can also continue to work on his control and his still-developing breaking ball. The kid already wields a spin-heavy, high-90s MPH fastball, but being able to also use his curveball will be huge in his quest to becoming a late-innings reliever in the majors. I certainly think he has what it takes. Let’s see if he can keep it up.

3 responses to “Offseason Prospect Review: Indigo Diaz”

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