Mitchell Parker

Mitchell Parker

26-Year-Old PitcherRP
Washington Nationals
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
RANKS
Rest of Season
From Preseason
#362
ADP
Signed a one-year contract with the Nationals in March of 2026.
Picks up win in 2026 debut
PWashington Nationals
April 14, 2026
Parker (1-0) picked up the win Tuesday against the Pirates, allowing two hits with no walks and five strikeouts across two scoreless innings.
Analysis
After PJ Poulin and Miles Mikolas combined to surrender four runs on five hits and two walks with two home runs allowed across 4.1 innings, Parker was called on in relief after he was recalled from Triple-A earlier in the day Tuesday. It was an impressive season debut for the left-hander after he failed to make the big-league club out of spring training. With Mikolas continuing to get pummeled to the tune of an 11.49 ERA and six home runs allowed, Parker could be a candidate to replace the veteran in the Nationals' rotation moving forward.
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Pitching Stats
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2026 MLB Game Log
2026
2025
2024
2026 MLB Game Log
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Scoring
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2025 MLB Game Log
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2024 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
46
Last 10 Games
46
Last 5 Games
46
How many pitches does Mitchell Parker 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 Mitchell Parker 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 2024
 
 
-3%
BAA vs RHP
2026
 
 
-100%
BAA vs LHP
2025
 
 
-1%
BAA vs LHP
2024
 
 
-11%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .272 347 67 26 86 13 4 7
Since 2024vs Right .263 1034 174 75 248 61 2 36
2026vs Left .000 4 2 0 0 0 0 0
2026vs Right .333 6 3 0 2 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
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2024
 
 
-32%
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 6.10 1.46 138.2 7 13 1 6.6 3.6 1.2
2026Home 0 0 0 0 0 0 0 0 0
2026Away 0.00 1.00 2.0 1 0 0 22.5 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
More Splits View More Split Stats
Stat Review
How does Mitchell Parker 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
0.00
 
K/9
22.5
 
BB/9
0.0
 
HR/9
0.0
 
Fastball
94.1 mph
 
ERA
0.00
 
WHIP
1.00
 
BABIP
.758
 
GB/FB
0.00
 
Left On Base
100.0%
 
Exit Velocity
84.1 mph
 
Barrels/BBE
0.0%
 
Spin Rate
2315 rpm
 
Balls Hit 95+ MPH
35.7%
 
Swinging Strike
26.1%
 
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 Mitchell Parker See More
Recent RotoWire Articles Featuring Mitchell Parker See More
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
Recalled from Triple-A
PWashington Nationals
April 14, 2026
The Nationals recalled Parker from Triple-A Rochester on Tuesday.
Analysis
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Sent packing to Triple-A
PWashington Nationals
March 13, 2026
The Nationals optioned Parker to Triple-A Rochester on Friday.
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Collects long-relief save
PWashington Nationals
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
September 19, 2025
The Nationals have demoted Parker to the bullpen, Mark Zuckerman of MASNSports.com reports.
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Pummeled in loss
PWashington Nationals
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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