2026 Stats
W-L
3-5
ERA
5.57
WHIP
1.67
K
53
SV
0
Rest-of-Season Projections
2026 Fantasy Outlook
Peterson was working on a strong campaign with a 2.83 ERA through 21 starts last season, but he fell apart down the stretch with 39 runs allowed in his final 41.2 innings. The end result was a 4.37 ERA, 1.37 WHIP and 150:65 K:BB over 168.2 innings, which was the largest workload of his big-league career by nearly 50 frames. Fatigue may have played a role in the decline, and it could also explain the small drop in velocity, with both his sinker and four-seam fastball losing a tick in 2025. Those two pitches have been Peterson's main offerings the past three years, and batters hit over. 300 against both pitches last season. The left-hander actually saw his groundball rate increase to a career-high 54.7 percent last season but also allowed a career-worst 45.9 percent hard-hit rate. Peterson will likely either need to get his fastball back on track or become more reliant on his breaking balls and changeup in order to return to the 2.90 ERA he posted over 21 starts in 2024. He showed more strikeout upside earlier in his career, but his fantasy ceiling is more limited given his 20.4 percent strikeout rate the past two years. Read Past Outlooks
Signed a one-year, $8.1 million contract with the Mets in January of 2026.
Demoted to bullpen
Peterson has been demoted to the Mets' bullpen, Anthony DiComo of MLB.com reports.
Analysis
Peterson has had a disastrous couple months while splitting his time between starting pitcher and bulk reliever, holding a 5.57 ERA, 1.67 WHIP and 53:23 K:BB over 53.1 innings. He will be available to pitch in relief beginning Sunday. Sean Manaea is taking Peterson's spot as a starter/bulk reliever.
Peterson has had a disastrous couple months while splitting his time between starting pitcher and bulk reliever, holding a 5.57 ERA, 1.67 WHIP and 53:23 K:BB over 53.1 innings. He will be available to pitch in relief beginning Sunday. Sean Manaea is taking Peterson's spot as a starter/bulk reliever.
Pitching Stats
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2026 MLB Game Log
2026
2025
2024
2023
2022
2021
2020
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
74
Last 10 Games
75
Last 5 Games
80
How many pitches does David Peterson 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+
What part of the game does David Peterson generally pitch?
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
-13%
BAA vs LHP
2026
-12%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2024vs Left | .234 | 110 | 17 | 79 | 5 | |||
| Since 2024vs Right | .269 | 194 | 117 | 263 | 16 | |||
| 2026vs Left | .275 | 24 | 5 | 19 | 1 | |||
| 2026vs Right | .311 | 29 | 18 | 47 | 1 | |||
| 2025vs Left | .228 | 48 | 6 | 34 | 1 | |||
| 2025vs Right | .267 | 102 | 59 | 132 | 10 | |||
| 2024vs Left | .218 | 38 | 6 | 26 | 3 | |||
| 2024vs Right | .251 | 63 | 40 | 84 | 5 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2024
-20%
ERA on Road
2026
-44%
ERA on Road
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2024Home | 4.43 | 1.47 | 158.1 | 8.3 | 3.7 | ||||
| Since 2024Away | 3.56 | 1.32 | 184.2 | 7.7 | 3.4 | ||||
| 2026Home | 7.18 | 1.97 | 26.1 | 9.6 | 4.8 | ||||
| 2026Away | 4.00 | 1.37 | 27.0 | 8.3 | 3.0 | ||||
| 2025Home | 4.20 | 1.34 | 83.2 | 7.2 | 3.3 | ||||
| 2025Away | 4.24 | 1.40 | 85.0 | 8.8 | 3.6 | ||||
| 2024Home | 3.35 | 1.43 | 48.1 | 9.5 | 3.7 | ||||
| 2024Away | 2.60 | 1.20 | 72.2 | 6.2 | 3.2 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does David Peterson 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.
* 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
2.30K/9
8.9BB/9
3.9HR/9
0.3Fastball
92.1 mphERA
5.57WHIP
1.67BABIP
.397GB/FB
2.38Left On Base
60.3%Exit Velocity
82.0 mphBarrels/BBE
3.4%Spin Rate
2135 rpmBalls Hit 95+ MPH
27.5%Swinging Strike
10.1%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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Past Fantasy Outlooks
2025
2024
2023
2021
2020
2019
2018
Peterson didn't make his 2024 debut until late May after recovering from offseason hip surgery. He wound up being a key piece in the rotation for a Mets team that made it to the NLCS, and the left-hander was particularly good down the stretch with a 2.41 ERA, 1.14 WHIP and 58:20 K:BB over 67.1 frames during the final two months of the regular season. Like many pitchers on the Mets staff last season, Peterson embraced the sinker, using it as his fastball of choice for the first time in his career. While he sported a 50.1 percent ground ball rate, Peterson also watched his strikeout rate plummet from 26 percent to 19.8 percent. His velocity was fine, and Peterson can still be quite effective with a high ground ball rate if he can just get the strikeout rate back to even a league-average level. That said, with such a large gap between his xERA (4.59) and actual ERA (2.90), some level of regression from the southpaw looks to be a safe bet.
More Fantasy News
Implodes against Cincinnati
Peterson (3-5) took the loss against the Reds on Tuesday, allowing six runs on 11 hits and three walks while striking out four across five innings.
Analysis
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Survives early scare in third win
Peterson (3-4) notched the win Thursday against the Nationals, allowing one run on four hits and three walks in five innings. He struck out three.
Analysis
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Secures win in bulk-relief outing
Peterson (2-4) allowed two runs on six hits, three walks and a hit batsman while striking out eight over four innings to earn the win Saturday versus the Yankees.
Analysis
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Working in bulk behind Brazoban
Peterson is slated to pitch in bulk relief behind opener Huascar Brazoban during Saturday's game against the Yankees at Citi Field, Abbey Mastracco of the New York Daily News reports.
Analysis
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Delivers five frames in bulk role
Peterson allowed three runs (zero earned) on four hits and no walks while striking out three over five innings in Sunday's 5-1 loss against the Diamondbacks.
Analysis
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Latest Fantasy Rumors
Drawing trade interest
Peterson is generating trade interest, Tim Britton and Will Sammon of The Athletic report.
Analysis
The Mets are open to dealing the left-hander if the return allows them to fill another roster need. Peterson was the Mets' most reliable starting pitcher for most of the 2025 season but struggled down the stretch, posting an 8.83 ERA over his last eight starts. He is eligible for salary arbitration for a final time this offseason before reaching free agency next winter.
The Mets are open to dealing the left-hander if the return allows them to fill another roster need. Peterson was the Mets' most reliable starting pitcher for most of the 2025 season but struggled down the stretch, posting an 8.83 ERA over his last eight starts. He is eligible for salary arbitration for a final time this offseason before reaching free agency next winter.