Janson Junk

Janson Junk

29-Year-Old PitcherRP
Miami Marlins
2025 Fantasy Outlook
There was no outlook written for Janson Junk in 2025. Check out the latest news below for more on his current fantasy value.
$Signed a one-year contract with the Marlins in February of 2025.
Rough outing in San Francisco
PMiami Marlins
June 26, 2025
Junk allowed five runs on eight hits and struck out one without walking a batter over 3.2 innings in a no-decision Thursday versus the Giants.
ANALYSIS
Junk avoided walking a batter, but that was about the only positive to take from this unusually high-scoring contest at Oracle Park. He hasn't issued a walk in any of his last three outings, allowing six runs over 14.1 innings while adding 10 strikeouts. Junk won those previous two appearances and looks poised to have first dibs on the rotation spot that opened up when Max Meyer (hip) was ruled out for the season. Junk is at a 3.73 ERA, 1.15 WHIP and 26:2 K:BB across 31.1 innings over seven appearances this year. The 29-year-old is projected to make his next start at home versus the Twins.
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Pitching Stats
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2025
2024
2023
2022
2021
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2024 MLB Game Log
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2023 MLB Game Log
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2022 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
65
Last 10 Games
65
Last 5 Games
66
How many pitches does Janson Junk generally throw?
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
What part of the game does Janson Junk generally pitch?
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2023
 
 
-19%
BAA vs RHP
2025
 
 
-22%
BAA vs RHP
2024
 
 
-35%
BAA vs RHP
2023
 
 
-17%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .363 100 13 7 33 6 1 3
Since 2023vs Right .295 109 26 1 31 7 0 2
2025vs Left .315 57 8 2 17 3 1 1
2025vs Right .246 71 18 0 17 3 0 0
2024vs Left .647 20 1 3 11 1 0 2
2024vs Right .423 28 7 1 11 3 0 1
2023vs Left .250 23 4 2 5 2 0 0
2023vs Right .300 10 1 0 3 1 0 1
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2023
 
 
-1%
ERA on Road
2025
 
 
-74%
ERA at Home
2024
 
 
-75%
ERA on Road
2023
 
 
-100%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 5.82 1.48 21.2 1 0 0 10.4 1.2 1.2
Since 2023Away 5.76 1.60 25.0 1 1 1 5.0 1.8 0.7
2025Home 1.38 0.69 13.0 1 0 0 11.1 0.0 0.0
2025Away 5.40 1.47 18.1 1 0 1 4.9 1.0 0.5
2024Home 18.00 3.67 6.0 0 0 0 9.0 4.5 4.5
2024Away 4.50 2.00 2.0 0 0 0 9.0 4.5 0.0
2023Home 0.00 0.38 2.2 0 0 0 10.1 0.0 0.0
2023Away 7.71 1.93 4.2 0 1 0 3.9 3.9 1.9
More Splits View More Split Stats
Stat Review
How does Janson Junk compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.

* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
13.00
 
K/9
7.5
 
BB/9
0.6
 
HR/9
0.3
 
Fastball
94.3 mph
 
ERA
3.73
 
WHIP
1.15
 
BABIP
.346
 
GB/FB
1.64
 
Left On Base
66.5%
 
Exit Velocity
82.8 mph
 
Barrels/BBE
4.0%
 
Spin Rate
2353 rpm
 
Balls Hit 95+ MPH
27.8%
 
Swinging Strike
11.3%
 
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Past Fantasy Outlooks
2024
2023
Acquired from the Angels in the Hunter Renfroe trade in November of 2022, Junk made just two appearances during his first year with the Brewers. The 28-year-old covered 140 innings at Triple-A Nashville last season and finished with an underwhelming 4.18 ERA, 1.35 WHIP and 94:44 K:BB. A move to the bullpen could be on tap for Junk in 2024 given his plus-4.00 ERA and subpar strikeout numbers (6.9 K/9) at Triple-A over the previous two seasons.
The Angels acquired Junk from the Yankees in July of 2021 as part of the trade that sent Andrew Heaney to New York. Junk had an up-and-down initial taste of the majors, posting a 3.86 ERA and a 10:2 K:BB over 16.1 innings that season. He spent most of 2022 with Triple-A Salt Lake but had three scattered outings with the Angels. The right-hander looked good in his first start of the campaign, striking out eight batters in five scoreless innings but faltered in his next (and final) appearance, yielding six runs in 2.1 frames. Junk relies primarily on a fastball-slider combo -- the slider is the better offering, but the fastball is thrown with enough spin to be effective despite sitting in the low-to-mid-90s. He enjoyed a breakout campaign in 2021 at Double-A while in the Yankees system, posting a 1.78 ERA and 0.97 WHIP over 14 appearances. However, that performance looks like an outlier, as none of his his seasons before or since are on the same radar. That's not to say Junk won't be an effective big-leaguer, but he's not likely to evolve into a front-of-rotation starter. The Angels moved Junk to Milwaukee in November as part of a trade to acquire Hunter Renfroe. He's likely slated to start 2023 at Triple-A or in the big-league bullpen.
More Fantasy News
Awarded another start
PMiami Marlins
June 23, 2025
Junk is scheduled to start Thursday's game against the Giants in San Francisco, Christina De Nicola of MLB.com reports.
ANALYSIS
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Five strong innings in win
PMiami Marlins
June 21, 2025
Junk (2-0) picked up the win after throwing five innings, allowing one run on five hits and no walks while striking out five during Friday's 6-2 win against Atlanta.
ANALYSIS
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Entering rotation Friday
PMiami Marlins
June 19, 2025
Junk is listed as the Marlins' starting pitcher for Friday's game versus Atlanta at LoanDepot Park, Christina De Nicola of MLB.com reports.
ANALYSIS
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Dazzles as primary pitcher
PMiami Marlins
June 14, 2025
Junk (1-0) picked up the win Saturday, scattering two hits over 5.2 scoreless innings of relief in a 4-3 victory over the Nationals. He struck out four without walking a batter.
ANALYSIS
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Bails out bullpen Friday
PMiami Marlins
May 31, 2025
Junk gave up three hits and struck out five over four scoreless relief innings in Friday's loss to the Giants.
ANALYSIS
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Latest Fantasy Rumors
Better odds to start?
PMilwaukee Brewers
February 8, 2023
Junk may have an improved chance of making the Brewers' starting rotation after Adam McCalvy of MLB.com reported Tuesday that Aaron Ashby will be behind to begin camp due to shoulder fatigue.
ANALYSIS
Ashby missed time with shoulder inflammation last season, so the team may exercise additional caution this time around. Junk was acquired from the Angels in November and may have a hard time cracking the rotation, even if Ashby is unavailable for Opening Day. Junk has just seven big-league appearances under his belt and has a 4.74 ERA over 24.2 frames.
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