2026 Stats
W-L
4-7
ERA
6.45
WHIP
1.64
K
70
SV
1
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. Traded to the Cubs in June of 2026.
Lacks command in no-decision
Peterson allowed one run on two hits across five innings and did not factor into the decision in Thursday's loss to the Orioles. He walked four and struck out two.
Analysis
Peterson pitched pretty well overall Thursday but struggled with his command as he tied a season high in walks. Even with the shaky control it was still a huge step in the right direction for the lefty after being tagged for 10 runs in only 3.2 innings in his last start. Peterson will now carry a 6.45 ERA and 1.64 WHIP into the All-Star break, and he should slot into the back of Chicago's rotation once the second half kicks off, at least until the likes of Jameson Taillon (hamstring), Edward Cabrera (hamstring) and Ben Brown (neck) are able to return.
Peterson pitched pretty well overall Thursday but struggled with his command as he tied a season high in walks. Even with the shaky control it was still a huge step in the right direction for the lefty after being tagged for 10 runs in only 3.2 innings in his last start. Peterson will now carry a 6.45 ERA and 1.64 WHIP into the All-Star break, and he should slot into the back of Chicago's rotation once the second half kicks off, at least until the likes of Jameson Taillon (hamstring), Edward Cabrera (hamstring) and Ben Brown (neck) are able to return.
Pitching Stats
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2026 MLB Game Log
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Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
72
Last 10 Games
74
Last 5 Games
74
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
-13%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2024vs Left | .235 | 120 | 18 | 89 | 8 | |||
| Since 2024vs Right | .270 | 201 | 130 | 285 | 20 | |||
| 2026vs Left | .264 | 34 | 6 | 29 | 4 | |||
| 2026vs Right | .305 | 36 | 31 | 69 | 5 | |||
| 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
-26%
ERA on Road
2026
-50%
ERA on Road
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2024Home | 4.99 | 1.51 | 169.2 | 8.1 | 3.8 | ||||
| Since 2024Away | 3.69 | 1.31 | 202.1 | 7.5 | 3.4 | ||||
| 2026Home | 8.84 | 1.99 | 37.2 | 8.4 | 4.8 | ||||
| 2026Away | 4.43 | 1.34 | 44.2 | 7.1 | 3.4 | ||||
| 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
1.89K/9
7.7BB/9
4.0HR/9
1.0Fastball
92.2 mphERA
6.45WHIP
1.64BABIP
.354GB/FB
1.91Left On Base
58.0%Exit Velocity
83.1 mphBarrels/BBE
4.2%Spin Rate
2117 rpmBalls Hit 95+ MPH
28.1%Swinging Strike
9.5%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
Folds against Cards
Peterson (4-7) took the loss Friday as the Cubs were routed 17-1 by the Cardinals, surrendering 10 runs on nine hits and three walks over 3.2 innings. He struck out three.
Analysis
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Receiving another start
Peterson is slated to start Friday's game against the Cardinals at Wrigley Field, Jared Wyllys of AllCHGO.com reports.
Analysis
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Shines in Cubs debut
Peterson (4-6) notched the win Saturday against the Brewers, allowing two runs on five hits and no walks in 5.2 innings. He struck out two.
Analysis
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Dealt to Cubs
The Cubs acquired Peterson from the Mets on Wednesday in exchange for infielder Cole Mathis (undisclosed), Jeff Passan of ESPN.com reports.
Analysis
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Roughed up early in sixth loss
Peterson (3-6) took the loss Sunday, allowing five runs (four earned) on six hits and two walks over four innings against the Phillies. He struck out five.
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.