Miami Marlins Depth: Jordan Yamamoto & Humberto Mejia Untouchable

The Miami Marlins got an off day on Monday May 20th, but it was a busy day below the major league level.

Miami Marlins pitching prospect Jordan Yamamoto started for the Jacksonville Jumbo Shrimp, and was nearly perfect. Seven innings of work, no hits or runs allowed. Only a second inning walk stained his otherwise flawless effort in a 5-1 win against the Montgomery Biscuits.

Yamamoto struck out four in a signature effort, getting 69-of-107 pitches over the plate. Now 3-4 on the season, he dropped his ERA to 3.42, and is now holding opposing batters to a mark of .183. After nine starts, he’s allowed 32 hits and 19 walks in 50 innings, a 1.050 WHIP.

Yamamoto was the lowest-ranked of the four prospects the Miami Marlins gained in the Christian Yelich deal with the Milwaukee Brewers. Along with Lewis Brinson, Monte Harrison, and Isan Diaz, Yamamoto is expected to impact the Marlins at the major league level sometime around 2020.

Humberto Mejia, pitching in the first game of a doubleheader against the Beloit Snappers, had a perfect game going until the seventh inning. A scheduled seven-inning affair, Clinton couldn’t mar the scoreboard until the eighth. Mejia’s pitch count allowed him to last the full eight, as the Kings scored six runs in the top of the frame. He struck out eight, allowed two hits, and one unearned run to drop his ERA to 2.16. Mejia got 71-of-104 pitches over the dish.

Mejia is now 4-0 in his first look at the full-season-A level, and has allowed only 22 hits and 12 walks in 41 2/3 innings. That’s good for a .153 opposing batting average and a 0.82 WHIP. The Marlins acquired Mejia on a minor league deal in late-2013, and after missing 2017 with a major injury, has come on strong. Only 22-years-old, Humberto can make an impact on the Miami Marlins parent club as early as 2022.

More from Marlins Prospects

• Miami Marlins: Checking in on prospects from the 2022 Arizona Fall League
• Miami Marlins: How top 2022 MLB Draft picks performed this season
• What’s wrong with Kahlil Watson?
• Miami Marlins: Farm System rankings part 2
• Miami Marlins: Farm System rankings part 1

In addition to those two fine performances, Ben Meyer tossed six innings for the New Orleans Baby Cakes in a 5-2 win against the Iowa Cubs. In getting 56-of-92 over the plate, the Cubs managed two hits and two walks for one run against the erstwhile major leaguer.

Meyer, who is 2-4 with a 5.79 ERA thus far in 2019, continues to whiff batters at a solid rate, 9.7 per nine innings. His control still needs work, as he has issued 28 walks in 37 1/3 innings while allowing a .244 opposing batting average.

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