2026 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
RANKS
Rest of Season
Signed a minor-league contract with the Diamondbacks in December of 2025.
Loses out in bid for roster
The Diamondbacks reassigned Curtiss to minor-league camp Sunday, Alex Weiner of ArizonaSports.com reports.
Analysis
Curtiss appears set to begin the season in the bullpen at Triple-A Reno after he was touched up for three earned runs on five hits and two walks over 5.2 innings in Cactus League play. The 32-year-old righty could earn another look in the majors if he can rediscover the form he displayed last season across two stints with Arizona last year, when he collected four holds and accrued a 3.93 ERA, 0.93 WHIP and 24:5 K:BB in 36.2 innings.
Curtiss appears set to begin the season in the bullpen at Triple-A Reno after he was touched up for three earned runs on five hits and two walks over 5.2 innings in Cactus League play. The 32-year-old righty could earn another look in the majors if he can rediscover the form he displayed last season across two stints with Arizona last year, when he collected four holds and accrued a 3.93 ERA, 0.93 WHIP and 24:5 K:BB in 36.2 innings.
Pitching Stats
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2025 MLB Game Log
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Minor League Game Log
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Left/Right Pitching Splits
Since 2024
-40%
BAA vs LHP
2026
No Stats
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2024vs Left | .172 | 15 | 3 | 11 | 4 |
| Since 2024vs Right | .289 | 10 | 2 | 24 | 3 |
| 2026vs Left | 0 | 0 | 0 | 0 | 0 |
| 2026vs Right | 0 | 0 | 0 | 0 | 0 |
| 2025vs Left | .150 | 14 | 3 | 9 | 3 |
| 2025vs Right | .267 | 10 | 2 | 20 | 2 |
| 2024vs Left | .500 | 1 | 0 | 2 | 1 |
| 2024vs Right | .500 | 0 | 0 | 4 | 1 |
Home/Away Pitching Splits
Since 2024
-37%
ERA on Road
2026
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |
|---|---|---|---|---|---|
| Since 2024Home | 5.57 | 1.00 | 21.0 | 4.7 | 0.9 |
| Since 2024Away | 3.50 | 1.06 | 18.0 | 7.0 | 1.5 |
| 2026Home | 0 | 0 | 0 | 0 | 0 |
| 2026Away | 0 | 0 | 0 | 0 | 0 |
| 2025Home | 4.79 | 0.87 | 20.2 | 4.8 | 0.9 |
| 2025Away | 2.81 | 1.00 | 16.0 | 7.3 | 1.7 |
| 2024Home | 54.00 | 9.00 | .333333 | 0.0 | 0.0 |
| 2024Away | 9.00 | 1.50 | 2.0 | 4.5 | 0.0 |
Minor League Left/Right Pitching Splits (AAA)
Since 2024
-1%
BAA vs RHP
2026
No Stats
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2024vs Left | .283 | 36 | 9 | 36 | 2 |
| Since 2024vs Right | .279 | 33 | 15 | 53 | 9 |
| 2026vs Left | 0 | 0 | 0 | 0 | 0 |
| 2026vs Right | 0 | 0 | 0 | 0 | 0 |
| 2025vs Left | .300 | 14 | 1 | 15 | 2 |
| 2025vs Right | .291 | 14 | 8 | 23 | 5 |
| 2024vs Left | .273 | 22 | 8 | 21 | 0 |
| 2024vs Right | .270 | 19 | 7 | 30 | 4 |
Stat Review
How does John Curtiss 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
4.80K/9
5.9BB/9
1.2HR/9
1.2Fastball
94.3 mphERA
3.93WHIP
0.93BABIP
.232GB/FB
0.80Left On Base
59.3%Exit Velocity
83.4 mphBarrels/BBE
4.7%Spin Rate
2425 rpmBalls Hit 95+ MPH
25.7%Swinging Strike
9.7%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
2021
2018
2017
Following an awful 2019 campaign during which he registered a 7.75 ERA and walked 22 batters in 33 innings between two Triple-A clubs, Curtiss was released by the Phillies and faced an uncertain future. In a career-changing turn of events, the Rays swooped in and did what they do best, helping Curtiss adjust his mechanics and emerge as one of the AL's top middle relievers. The right-hander thrived in his first extended big-league opportunity, posting a 1.80 ERA and 0.96 WHIP over 25 innings. Whereas he couldn't seem to find the strike zone the previous season, Curtiss demonstrated exquisite control in 2020, registering a minuscule 3.0 BB%. Meanwhile, he relied almost exclusively on a mid-90s fastball and effective slider to register a 25.3 K%. Curtiss' 3.57 xFIP portends some regression over a full season, but he's locked into a middle-relief role with an occasional opportunity to open.
More Fantasy News
Returns to Arizona
The Diamondbacks re-signed Curtiss to a minor-league contract Tuesday.
Analysis
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Outrighted to Reno
Curtiss cleared waivers Wednesday and was sent outright to Triple-A Reno, Alex Weiner of ArizonaSports.com reports.
Analysis
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Earns first save of season
Curtiss allowed a hit in a scoreless inning to earn the save in Saturday's 4-3 win over the Phillies.
Analysis
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Collects third win of 2025
Curtiss (3-1) came away with the win in Saturday's extra-inning game against the Twins, allowing one hit and zero walks while striking out two batters in two scoreless innings.
Analysis
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Selected from Triple-A
The Diamondbacks selected Curtiss's contract from Triple-A Reno on Saturday.
Analysis
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Latest Fantasy Rumors
Set for bullpen spot?
Curtiss is in position to secure one of the Mets' final relief roles, per Anthony DiComo of MLB.com.
Analysis
Curtiss is coming off a solid season, logging a 3.45 ERA and an expected ERA of 3.87. The 29-year-old doesn't post stellar strikeout numbers, so he's likely to gain fantasy relevance only if he parlays a strong start into save opportunities at some point.
Curtiss is coming off a solid season, logging a 3.45 ERA and an expected ERA of 3.87. The 29-year-old doesn't post stellar strikeout numbers, so he's likely to gain fantasy relevance only if he parlays a strong start into save opportunities at some point.