2026 Stats
W-L
0-0
ERA
3.00
WHIP
0.83
K
7
SV
1
Rest-of-Season Projections
Signed a one-year contract with the Mariners in March of 2026.
Grabs three-inning save
Criswell earned the save in Sunday's 8-0 win over the Guardians, allowing two hits while striking out five over three scoreless innings.
Analysis
Criswell was sharp Sunday, limiting the Guardians to a pair of singles to close out Seattle's shutout victory, earning his second career save. The 29-year-old Criswell made the team as a long-relief option after posting a 2.51 ERA across 14.1 innings in spring training. While he may have a defined role in the Mariners' bullpen, don't expect Criswell to be a frequent source of saves. The right-hander has a career ERA of 4.42 with a 1.42 WHIP across 158.2 major-league innings.
Criswell was sharp Sunday, limiting the Guardians to a pair of singles to close out Seattle's shutout victory, earning his second career save. The 29-year-old Criswell made the team as a long-relief option after posting a 2.51 ERA across 14.1 innings in spring training. While he may have a defined role in the Mariners' bullpen, don't expect Criswell to be a frequent source of saves. The right-hander has a career ERA of 4.42 with a 1.42 WHIP across 158.2 major-league innings.
Pitching Stats
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2026 MLB Game Log
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2025
2024
2023
2022
2021
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
30
Last 10 Games
30
Last 5 Games
30
How many pitches does Cooper Criswell 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 Cooper Criswell 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
-5%
BAA vs LHP
2026
-100%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2024vs Left | .268 | 48 | 20 | 62 | 4 | |||
| Since 2024vs Right | .283 | 41 | 17 | 68 | 11 | |||
| 2026vs Left | .250 | 6 | 1 | 4 | 2 | |||
| 2026vs Right | .000 | 1 | 0 | 0 | 0 | |||
| 2025vs Left | .310 | 3 | 1 | 9 | 0 | |||
| 2025vs Right | .311 | 6 | 4 | 14 | 3 | |||
| 2024vs Left | .263 | 39 | 18 | 49 | 2 | |||
| 2024vs Right | .283 | 34 | 13 | 54 | 8 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2024
-1%
ERA on Road
2026
-100%
ERA on Road
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2024Home | 3.97 | 1.35 | 68.0 | 6.4 | 2.9 | ||||
| Since 2024Away | 3.93 | 1.36 | 55.0 | 6.7 | 2.5 | ||||
| 2026Home | 3.00 | 0.83 | 6.0 | 10.5 | 1.5 | ||||
| 2026Away | 0 | 0 | 0 | 0 | 0 | ||||
| 2025Home | 3.95 | 1.54 | 13.2 | 4.6 | 2.6 | ||||
| 2025Away | 2.25 | 1.75 | 4.0 | 4.5 | 2.3 | ||||
| 2024Home | 4.10 | 1.37 | 48.1 | 6.3 | 3.2 | ||||
| 2024Away | 4.06 | 1.33 | 51.0 | 6.9 | 2.5 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Cooper Criswell 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.
* 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
7.00K/9
10.5BB/9
1.5HR/9
3.0Fastball
90.6 mphERA
3.00WHIP
0.83BABIP
.168GB/FB
0.71Left On Base
136.4%Exit Velocity
82.1 mphBarrels/BBE
12.5%Spin Rate
1916 rpmBalls Hit 95+ MPH
34.4%Swinging Strike
8.8%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
Criswell did a little bit of everything for the Boston pitching staff in 2024. He worked out of the pen as well as in the rotation as injuries impacted the rotation. Peak Criswell was him throwing seven shutout innings at Coors Field near the end of July, which was one of the five starts in which he earned a win out of his 18 starts. The flip side was his effort against Baltimore, as he faced them twice and allowed 13 earned runs in 7.1 innings of work, which did a number on his overall ratios. Criswell has enough stuff to succeed at the big-league level but not enough stuff to be a set-it-and-forget-it type pitcher for fantasy managers. The righty had his issues against fellow righties last season (.283/.335/.476), but his cutter/changeup approach to lefties helped him hold that group to a .263/.332/.366 line on the season. Criswell is currently slated to compete for a final spot in the Boston rotation, but could go to the bullpen or to Triple-A to begin the season as well. His ceiling is a streaming option, particularly against lefty-heavy lineups.
More Fantasy News
Could open season in rotation
Criswell is competing for the final starting spot in Seattle's Opening Day rotation, per Daniel Kramer of MLB.com.
Analysis
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Bound for Seattle
The Mets traded Criswell to the Mariners on Friday in exchange for cash, Jorge Castillo of ESPN.com reports.
Analysis
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DFA'd by Mets
The Mets designated Criswell for assignment Wednesday, Anthony DiComo of MLB.com reports.
Analysis
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Claimed off waivers by Mets
The Mets claimed Criswell off waivers from the Red Sox on Friday, Jorge Castillo of ESPN.com reports.
Analysis
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Designated for assignment
The Red Sox designated Criswell for assignment Thursday, Chris Cotillo of MassLive.com reports.
Analysis
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Latest Fantasy Rumors
Boston hoped to retain
After designating Criswell for assignment Thursday, the Red Sox hoped to retain him before he was claimed off waivers by the Mets, reports Chris Cotillo of MassLive.com.
Analysis
The Red Sox needed to clear some roster space after acquiring Johan Oviedo from the Pirates on Thursday, and Criswell was the roster casualty. The right-hander made just seven appearances in the big leagues during the 2025 regular season, giving up seven earned runs with a 9:5 K:BB over 17.2 innings. Criswell worked as a swingman for Boston in 2024 and fared adequately with a 4.08 ERA and 1.35 WHIP across 99.1 frames.
The Red Sox needed to clear some roster space after acquiring Johan Oviedo from the Pirates on Thursday, and Criswell was the roster casualty. The right-hander made just seven appearances in the big leagues during the 2025 regular season, giving up seven earned runs with a 9:5 K:BB over 17.2 innings. Criswell worked as a swingman for Boston in 2024 and fared adequately with a 4.08 ERA and 1.35 WHIP across 99.1 frames.