JJ Bleday Miami Marlins

Age: 24 (November 10, 1997) | 6' 3" | 205lbs. | Bats: Left Minors: of-89 lf-28 cf-23 rf-38 dh-21
MIA AA 2021 110 397 52 84 64 101 22 3 12 54 5 3 .212 .323 .373 14 22 .250 n/a
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Zach Buchanan at BP, rating the ten AFLers who impressed scouts the most:

9. OF J.J. Bleday, Marlins

Bleday raked this fall, hitting .316 with five homers and a 1.035 OPS for the Solar Sox. He was a No. 4 pick and a consensus top-50 prospect entering the year, so why isn’t he higher here? Well, because he was coming off a brutal Double-A campaign in which he hit .212 with a .695 OPS. That context is hard to erase, although scouts who have watched him through his career saw him take some positive, non-mirage steps this fall.

Over the summer, one scout said, “everything seemed sluggish.” But Bleday made some adjustments in Arizona, getting a little more load in his swing and altering his hand path so that he can get the barrel on more types of pitches. He’s always controlled the zone well and hit the ball hard when he caught it flush, but he didn’t make quality contact all that often. This fall, his adjustments allowed him to barrel more balls with a quick, short and explosive stroke.

He’s destined for an outfield corner, so those adjustments leading to more power are a must for his development. And some are still skeptical. “Might be overrated,” one scout said, pegging the left-handed hitter as a possible platoon player. And while another scout saw some swing-and-miss this fall — guessing the wrong pitch in the wrong count — the 24-year-old’s fall performance seems to have resuscitated his stock, making him a potential All-Star in the eyes of some evaluators.

Alex Patton Alex
Nov 25 '21

The star who shone brightest last night in Arizona.

1. JJ Bleday, OF, Marlins (No. 5, MLB No. 71): The 2019 first-rounder has enjoyed a much-improved Fall League and carried that to Saturday's showcase. The left-handed slugger crushed the first homer of the night at 102.7 mph exit velocity and 417 feet (the game's longest batted ball) in the first inning to get things going for the East. He added another hard-hit single in the fifth frame, making him one of only two players on the night with multiple hits. The 2021 Fall Stars Game MVP entered the night hitting .329/.447/.600 with six homers in 21 games with Mesa -- a huge boost from his .212/.323/.373 line during the regular season at Double-A Jacksonville.

JJ Bleday's two-run home run


Alex Patton Alex
Nov 15 '21

JJ Bleday (OF) MIA - Mar. 04


Bleday has impressed the Marlins with his maturity so far in camp, and the team hasn't ruled out the 23-year-old making his big-league debut later in the season, Barry Jackson and Craig Mish of The Miami Herald reports.

ROTOWIRE RECOMMENDS: The organization's No. 2 fantasy prospect homered in Miami's first game this spring before showing off his arm in right field on a double play Tuesday. Bleday will likely begin the season at Double-A Pensacola, but if he looks good at the plate in the high minors and the Marlins aren't in playoff contention, they could trade Corey Dickerson to open up a corner outfield spot for the youngster.

Alex Patton Alex
Mar 5 '21

BA, rolling out its Top 100 Prospects in MLB...

Headshot 2021 Jj Bleday 10404 Mlb

JJ Bleday


Final 2020 Ranking: 41 
Tools: Hit: 60 | Power: 60 | Run: 50 | Fielding: 55 | Arm: 60 
Skinny: The Marlins' rebuild has picked up speed, and Bleday is part of the next wave of solid prospects that could help the team keep up in the competitive NL East. 


Alex Patton Alex
Jan 20 '21

BP, rolling out its Top 10 Prospects on the Marlins...

  • 2.
  • JJ Bleday
  • RF
  • Born: 1997-11-10
  • B: Left
  • T: Left
  • H: 6′ 3″
  • W: 205 lbs.
  • Drafted fourth overall in the 2019 draft, Vanderbilt University; signed for $6.67 million.

The Report: Bleday features one of the most well-rounded offensive profiles of any prospect, and could make contributions to the big league club very early in the 2021 season. He will offer the Marlins’ lineup a combination of advanced bat-to-ball abilities for a slugger of his ilk, as he is able to get the barrel to the ball quickly with a quick left-handed stroke. The hands can get a bit bouncy with a whippy bat pre-release, still at a great firing position with a high elbow that creates plenty of loft in the swing, too, leading to plus power. As for another plus tool, he’s a good fit for right field thanks to a plus arm that has both carry and accuracy to his throws. The hulking outfielder isn’t exactly the speediest, which is perhaps the only knock against his game. 

Development Track: Bleday was believed to have been penciled-in for a 2020 campaign in Double-A, and as such, hasn’t played above A-ball. He got plenty of time this year at the Marlins’ complex; still, he’ll likely get some extra seasoning in the minors before leveling-up to the majors.

OFP: 60 / Middle-of-the-order impact bat

Variance: Low. He’s done it at every level so far, showing a good eye at the plate and minimal swing-and-miss, all which add to the confidence with the outcome. —Keanan Lamb

Major league ETA: 2021

J.P. Breen’s Fantasy Take: Bleday doesn’t generate as much dynasty excitement as he should. He won’t run much, and he hit just .257/.311/.379 in his professional debut. It’s important to remember, though, that Bleday plied his trade in Jupiter, which is one of the least power-friendly ballparks in one of the least hitter-friendly leagues. Trust the scouting reports. Bleday still boasts one of the best power-average combinations in the minors. He’s a top-200 dynasty player and a top-40 dynasty prospect.

Alex Patton Alex
Dec 18 '20