Adam Mazur

Adam Mazur

24-Year-Old PitcherSP
Miami Marlins AAA
2025 Fantasy Outlook
Dealt from San Diego to Miami at the 2024 trade deadline as part of the return for Tanner Scott and Bryan Hoeing, Mazur had a rocky run in his first taste of the big leagues, but there are reasons to expect better from him in 2025. He has some of the best command and control of any starting pitching prospect in the game, pacing all legitimate starting pitching prospects at Triple-A with a 4.9 percent walk rate, and he throws his fastball in the mid-90s. The 6-foot-2 righty throws three secondary offerings, although none of them are plus pitches, and when he's having success it's due to his ability to spot his fastball and then keep hitters off balance when he's ahead in the count. He logged a 1.19 WHIP and 3.92 FIP in 93.1 innings in the minors, with 13 of his 19 starts coming at Triple-A, and he should enter spring training with a chance to win a rotation spot on the stripped down Marlins. Mazur lacks a high ceiling, but he's a better bet to be a useful streamer in 2025 than his putrid MLB numbers from 2024 (7.49 ERA, 1.81 WHIP) suggest. Read Past Outlooks
RANKS
Rest of Season
From Preseason
#366
ADP
Signed a one-year contract with the Marlins in March of 2025.
Optioned to Triple-A
PMiami Marlins  AAA
June 19, 2025
The Marlins optioned Mazur to Triple-A Jacksonville on Thursday.
Analysis
Mazur struggled during his Marlins debut with four runs allowed in 5.2 innings Wednesday, and he'll now be sent back to Triple-A with Janson Junk due to join Miami's rotation. Robinson Pina was called up from Jacksonville in a corresponding move to bolster the team's bullpen depth.
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Pitching Stats
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2025 MLB Game Log
2025
2024
2025 MLB Game Log
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2024 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
97
Last 10 Games
97
Last 5 Games
97
How many pitches does Adam Mazur 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 Adam Mazur 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
 
 
-21%
BAA vs RHP
2025
 
 
-20%
BAA vs RHP
2024
 
 
-19%
BAA vs RHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .321 104 14 21 26 8 0 4
Since 2023vs Right .253 81 13 4 19 4 1 3
2025vs Left .250 12 3 4 2 0 0 1
2025vs Right .200 15 2 0 3 1 0 0
2024vs Left .329 92 11 17 24 8 0 3
2024vs Right .267 66 11 4 16 3 1 3
2023vs Left 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0
Home/Away Pitching Splits
Since 2023
 
 
-53%
ERA on Road
2025
 
 
-100%
ERA on Road
2024
 
 
-58%
ERA on Road
2023
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 9.39 1.91 23.0 1 3 0 6.3 5.1 2.3
Since 2023Away 4.41 1.59 16.1 0 1 0 6.1 6.6 0.6
2025Home 6.35 1.59 5.2 0 1 0 7.9 6.4 1.6
2025Away 0 0 0 0 0 0 0 0 0
2024Home 10.38 2.02 17.1 1 2 0 5.7 4.7 2.6
2024Away 4.41 1.59 16.1 0 1 0 6.1 6.6 0.6
2023Home 0 0 0 0 0 0 0 0 0
2023Away 0 0 0 0 0 0 0 0 0
Minor League Left/Right Pitching Splits (AAA)
Since 2023
 
 
-2%
BAA vs RHP
2025
 
 
-8%
BAA vs LHP
2024
 
 
-11%
BAA vs RHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .271 273 58 18 68 15 2 11
Since 2023vs Right .266 279 68 13 69 11 0 12
2025vs Left .246 155 34 13 34 6 0 7
2025vs Right .266 134 32 5 33 3 0 5
2024vs Left .301 118 24 5 34 9 2 4
2024vs Right .267 145 36 8 36 8 0 7
2023vs Left 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0
Stat Review
How does Adam Mazur compare to other starting pitchers?
This section compares his stats with all starting pitcher seasons from the previous three seasons (minimum 120 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 120 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
1.25
 
K/9
7.9
 
BB/9
6.4
 
HR/9
1.6
 
Fastball
94.6 mph
 
ERA
6.35
 
WHIP
1.59
 
BABIP
.267
 
GB/FB
1.29
 
Left On Base
65.8%
 
Exit Velocity
83.9 mph
 
Barrels/BBE
12.5%
 
Spin Rate
2251 rpm
 
Balls Hit 95+ MPH
28.1%
 
Swinging Strike
11.3%
 
Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Adam Mazur See More
Recent RotoWire Articles Featuring Adam Mazur See More
2024 Fantasy Outlook
Mazur checks a lot of boxes dynasty-league managers look for in pitching prospects. He throws a ton of strikes (walk rates below five percent at every stop) and has a full starter's pitch mix. Mazur was a projectable college starter when he was drafted out of Iowa in 2022, as he was 6-foot-2, 180 pounds and had room to put on good weight, and now Mazur's fastball sits at 95 mph. His changeup and slider will each flash plus, and if he continues on his current trajectory, he could surpass even a mid-rotation starter projection. The Padres all of a sudden have some rotation depth, with Jhony Brito and Randy Vasquez waiting for opportunities, but Mazur seems like the most likely of the Padres' Double-A arms to reach the majors this summer.
More Fantasy News
Falls to Philly in Miami debut
PMiami Marlins  AAA
June 19, 2025
Mazur (0-1) took the loss Wednesday, giving up four runs on five hits and four walks over 5.2 innings as the Marlins were downed 4-2 by the Phillies. He struck out five.
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Recalled ahead of start
PMiami Marlins  AAA
June 18, 2025
The Marlins recalled Mazur from Triple-A Jacksonville ahead of his scheduled start Wednesday against the Phillies in Miami.
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Starting Wednesday
PMiami Marlins  AAA
June 17, 2025
The Marlins will recall Mazur from Triple-A Jacksonville to start Wednesday's game against the Phillies, Christina De Nicola of MLB.com reports.
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Expected to make start this week
PMiami Marlins  AAA
June 17, 2025
Mazur has joined the Marlins in Miami and is expected to be recalled from Triple-A Jacksonville to make a start this week during the team's homestand, Craig Mish of the Miami Herald reports.
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Demoted to Triple-A
PMiami Marlins  AAA
March 8, 2025
The Marlins optioned Mazur to Triple-A Jacksonville on Saturday, Daniel Alvarez-Montes of ElExtraBase.com reports.
Analysis
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