Mitchell Parker

Mitchell Parker

26-Year-Old PitcherSP
Washington Nationals AAA
2026 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
W-L
ERA
WHIP
K
SV
Unlock Our Projections
2026 Fantasy Outlook
Parker got off to a flying start in 2025, posting a 1.39 ERA in 32.1 innings across his first five starts of the season. Those good feelings were short lived, as he went on to log a 5-15 record over his next 25 starts while sporting a 7.00 ERA and 1.60 WHIP over 126 innings, which prompted the Nationals to move the southpaw to the bullpen in September. Parker's role in 2026 is unclear, and given that he ranked near the bottom of qualified pitchers in xBA, xERA and strikeout rate, he would provide limited fantasy value even if he were a part of Washington's rotation by Opening Day. Read Past Outlooks
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RANKS
Rest of Season
From Preseason
#362
ADP
League AAA
Bats L
Throws L
40 Man Yes
Height 6'4"
Weight 195
DOB 9/27/1999
Drafted 5th Rd 2020
Signed a one-year contract with the Nationals in March of 2026.
Sent packing to Triple-A
PWashington Nationals  AAA
March 13, 2026
The Nationals optioned Parker to Triple-A Rochester on Friday.
Analysis
Parker lost his spot in the Nationals' rotation last season and didn't do enough this spring to get it back, collecting an uninspiring 3:5 K:BB over 3.2 innings during Grapefruit League action. The left-hander should open the season in the rotation at Rochester as he awaits another opportunity with the big club.
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Pitching Stats
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2025 MLB Game Log
2025
2024
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Scoring
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Minor League Game Log
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Left/Right Pitching Splits
Since 2024
 
 
-5%
BAA vs RHP
2026
No Stats
2025
 
 
-1%
BAA vs LHP
2024
 
 
-11%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .276 343 65 26 86 13 4 7
Since 2024vs Right .263 1028 171 75 246 61 2 36
2026vs Left 0 0 0 0 0 0 0 0
2026vs Right 0 0 0 0 0 0 0 0
2025vs Left .270 187 24 19 44 6 3 6
2025vs Right .273 538 79 39 134 37 1 19
2024vs Left .282 156 41 7 42 7 1 1
2024vs Right .251 490 92 36 112 24 1 17
Home/Away Pitching Splits
Since 2024
 
 
-33%
ERA at Home
2026
No Stats
2025
 
 
-5%
ERA at Home
2024
 
 
-60%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 4.12 1.30 179.0 10 13 0 7.0 2.3 1.2
Since 2024Away 6.19 1.47 136.2 6 13 1 6.3 3.7 1.3
2026Home 0 0 0 0 0 0 0 0 0
2026Away 0 0 0 0 0 0 0 0 0
2025Home 5.56 1.53 90.2 5 9 0 6.3 3.0 1.3
2025Away 5.84 1.31 74.0 4 7 1 4.9 3.4 1.5
2024Home 2.65 1.05 88.1 5 4 0 7.8 1.5 1.1
2024Away 6.61 1.66 62.2 2 6 0 8.0 4.0 1.0
Minor League Left/Right Pitching Splits (AAA)
Since 2024
 
 
-33%
BAA vs LHP
2026
 
 
-8%
BAA vs LHP
2025
No Stats
2024
 
 
-100%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .100 11 4 1 1 1 0 0
Since 2024vs Right .150 22 7 1 3 0 0 0
2026vs Left .167 6 2 0 1 1 0 0
2026vs Right .182 12 4 1 2 0 0 0
2025vs Left 0 0 0 0 0 0 0 0
2025vs Right 0 0 0 0 0 0 0 0
2024vs Left .000 5 2 1 0 0 0 0
2024vs Right .111 10 3 0 1 0 0 0
Stat Review
How does Mitchell Parker 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
1.78
 
K/9
5.6
 
BB/9
3.2
 
HR/9
1.4
 
Fastball
93.0 mph
 
ERA
5.68
 
WHIP
1.43
 
BABIP
.297
 
GB/FB
1.06
 
Left On Base
59.7%
 
Exit Velocity
84.5 mph
 
Barrels/BBE
6.1%
 
Spin Rate
2074 rpm
 
Balls Hit 95+ MPH
30.7%
 
Swinging Strike
9.6%
 
Prospect Rankings History
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Defensive Stats
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Stats Vs Today's Lineup
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Nationals Depth Chart
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Past Fantasy Outlooks
2025
2024
Parker beat the eventual world champion Dodgers in his big-league debut in April, and while there were bumps in the road from there, his final numbers as a rookie were highly respectable. The left-hander made 29 starts and totaled 151 innings for the Nationals, pitching to a 4.29 ERA and 1.30 WHIP. HIs fastball is lacking and can get touched up, but his splitter and slider both had whiff rates over 35 percent last season, hinting at room for growth with his strikeout rate even with his below-average velocity. He had a nine-run disaster Aug. 15 at Philadelphia which should serve as a reminder of his downside in the wrong matchup. Eventually he could shed the streamer label, but at least for now Parker should be deployed judiciously, if rostered.
A 24-year-old lefty, Parker has been a notable prospect in a shallow Nationals farm system for a couple years, but poor control and middling stuff limited his realistic upside. Parker primarily operates with a 92-mph four-seamer with solid movement and an 80-mph curveball while also mixing in a mid-80s splitter. He walked between 11.1 and 15.4 percent of batters from 2022 through 2023 while pitching in the mid-to-upper minors, and he doesn't have the pure stuff to have success with that many free passes, but only issued one walk in his first two starts of 2024, with one of those coming against the Dodgers' big-league lineup. Assuming Parker spends a good chunk of 2024 in the big-league rotation, he could be a deep-league streamer in good matchups, but there's not much data to suggest he can maintain the success he's had early in the season.
More Fantasy News
Collects long-relief save
PWashington Nationals  AAA
September 21, 2025
Parker earned a save in the Nationals' 3-2 win over the Mets on Sunday. He allowed two hits and no walks while striking out two across 3.2 scoreless innings.
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Shifting to bullpen
PWashington Nationals  AAA
September 19, 2025
The Nationals have demoted Parker to the bullpen, Mark Zuckerman of MASNSports.com reports.
Analysis
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Pummeled in loss
PWashington Nationals  AAA
September 15, 2025
Parker (8-16) suffered the loss Monday against Atlanta, coughing up six runs on 10 hits and one walk over five innings with one strikeout.
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Earns win with quality start
PWashington Nationals  AAA
September 9, 2025
Parker (8-15) allowed two runs on four hits and two walks over 7.2 innings Tuesday, striking out two and earning a win over the Marlins.
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Can't compete five frames Wednesday
PWashington Nationals  AAA
September 3, 2025
Parker came away with a no-decision in Wednesday's 10-5 win over the Marlins, giving up four runs (two earned) on seven hits and a walk over 4.2 innings. He struck out four.
Analysis
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