2025 Stats
W-L
3-2
ERA
3.93
WHIP
0.93
K
24
SV
1
Rest-of-Season Projections
RANKS
Rest of Season
Signed a one-year, minor-league contract with the Diamondbacks in February of 2025.
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
Curtiss is the 17th player to log a save for the Diamondbacks this season, which has seen the team take a closing committee to the extreme. Andrew Saalfrank has been bothered by shoulder fatigue recently and may not have been available, as he was not deployed despite his last appearance being Tuesday. Curtiss was hit hard in an outing Wednesday versus the Giants, allowing five runs (four earned) without recording an out, but he bounced back well. He's pitched to a 3.86 ERA, 0.94 WHIP and 21:5 K:BB through 35 innings while adding a save and four holds.
Curtiss is the 17th player to log a save for the Diamondbacks this season, which has seen the team take a closing committee to the extreme. Andrew Saalfrank has been bothered by shoulder fatigue recently and may not have been available, as he was not deployed despite his last appearance being Tuesday. Curtiss was hit hard in an outing Wednesday versus the Giants, allowing five runs (four earned) without recording an out, but he bounced back well. He's pitched to a 3.86 ERA, 0.94 WHIP and 21:5 K:BB through 35 innings while adding a save and four holds.
Pitching Stats
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2025 MLB Game Log
2025
2024
2023
2022
2021
2020
2019
2018
2017
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
18
Last 10 Games
16
Last 5 Games
13
How many pitches does John Curtiss 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 John Curtiss 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 2023
-42%
BAA vs LHP
2025
-44%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .165 | 21 | 6 | 14 | 5 | |||
| Since 2023vs Right | .284 | 20 | 7 | 38 | 5 | |||
| 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 | |||
| 2023vs Left | .143 | 6 | 3 | 3 | 1 | |||
| 2023vs Right | .275 | 10 | 5 | 14 | 2 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2023
-4%
ERA at Home
2025
-41%
ERA on Road
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 4.50 | 0.93 | 30.0 | 4.8 | 1.5 | ||||
| Since 2023Away | 4.71 | 1.29 | 28.2 | 7.8 | 2.5 | ||||
| 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 | ||||
| 2023Home | 2.00 | 0.78 | 9.0 | 5.0 | 3.0 | ||||
| 2023Away | 6.75 | 1.69 | 10.2 | 9.3 | 4.2 | ||||
| More Splits→ | View More Split Stats | ||||||||
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
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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Signs with Arizona
Curtiss signed a minor-league contract with the Diamondbacks on Tuesday that includes an invitation to spring training.
Analysis
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Goes unclaimed
The Rockies outrighted Curtiss to Triple-A Albuquerque on Aug. 9.
Analysis
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Scrubbed from 40-man roster
The Rockies designated Curtiss for assignment Tuesday.
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.