2026 Stats
W-L
1-3
ERA
4.70
WHIP
1.49
K
25
SV
0
Rest-of-Season Projections
2026 Fantasy Outlook
Gallen won double-digit games for a fourth consecutive season, winning 13 of his 33 starts. That is, however, where the good news ends. Gallen took a loss in 15 of the other 18 starts thanks to a career-worst 4.83 ERA fueled by a career-worst home run rate. Gallen surrendered 31 homers on the season, nearly as many as he had over the previous two seasons combined, with 20 of those homers coming off his two primary pitches. Gallen's four-seamer outcomes peaked in 2022, but 2025 was the first time he has allowed so many home runs off the pitch, and that gopheritis led to his issue of stranding runners with his LOB coming in 10 percentage points below his career average. Gallen worked on expanding his repertoire in 2025 by bring back more cutters and sinkers than he threw in 2024, but neither pitch was effective. Perhaps the path forward for a rebound for Gallen would be for him to simplify his offerings, focus on what he does best and throw away his 2025 struggles as he enters his quantity years, as his quality years appear to be a thing of the past. The fact he re-signed with Arizona isn't particularly surprising, so Gallen will have familiar surroundings in 2026. Read Past Outlooks
Signed a one-year, $22.03 million contract with the Diamondbacks in February of 2026.
Falls to 1-3
Gallen (1-3) took the loss against Pittsburgh on Thursday, pitching six innings during which he gave up four runs on six hits and two walks while striking out five batters.
Analysis
Gallen served up a solo homer to the second batter he faced but was able to make it through four frames with just that one run on his ledger. However, the veteran struggled late in this outing, allowing four straight batters to reach with two outs in the fifth frame to yield two runs before giving up another run on a solo homer in the sixth. Gallen was at least better than in his previous start, when he gave up six runs over 3.2 innings against the Cubs, but he's now at a mediocre 4.70 ERA with just one victory through eight starts on the season.
Gallen served up a solo homer to the second batter he faced but was able to make it through four frames with just that one run on his ledger. However, the veteran struggled late in this outing, allowing four straight batters to reach with two outs in the fifth frame to yield two runs before giving up another run on a solo homer in the sixth. Gallen was at least better than in his previous start, when he gave up six runs over 3.2 innings against the Cubs, but he's now at a mediocre 4.70 ERA with just one victory through eight starts on the season.
Pitching Stats
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2026 MLB Game Log
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2025
2024
2023
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2021
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Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
84
Last 10 Games
84
Last 5 Games
83
How many pitches does Zac Gallen 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 Zac Gallen 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
-2%
BAA vs RHP
2026
-4%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2024vs Left | .246 | 162 | 66 | 175 | 20 | |||
| Since 2024vs Right | .242 | 194 | 66 | 179 | 28 | |||
| 2026vs Left | .286 | 9 | 7 | 22 | 1 | |||
| 2026vs Right | .299 | 16 | 5 | 23 | 3 | |||
| 2025vs Left | .256 | 76 | 34 | 92 | 12 | |||
| 2025vs Right | .223 | 99 | 32 | 84 | 19 | |||
| 2024vs Left | .222 | 77 | 25 | 61 | 7 | |||
| 2024vs Right | .252 | 79 | 29 | 72 | 6 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2024
-21%
ERA at Home
2026
-63%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2024Home | 3.87 | 1.21 | 202.1 | 8.8 | 2.8 | ||||
| Since 2024Away | 4.91 | 1.38 | 176.0 | 8.1 | 3.5 | ||||
| 2026Home | 2.61 | 1.06 | 20.2 | 5.7 | 0.9 | ||||
| 2026Away | 7.13 | 1.98 | 17.2 | 6.1 | 5.1 | ||||
| 2025Home | 4.56 | 1.25 | 98.2 | 8.6 | 3.3 | ||||
| 2025Away | 5.11 | 1.28 | 93.1 | 7.8 | 2.9 | ||||
| 2024Home | 3.36 | 1.19 | 83.0 | 9.8 | 2.7 | ||||
| 2024Away | 4.02 | 1.35 | 65.0 | 9.1 | 4.0 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Zac Gallen 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
2.08K/9
5.9BB/9
2.8HR/9
0.9Fastball
93.6 mphERA
4.70WHIP
1.49BABIP
.330GB/FB
1.89Left On Base
70.0%Exit Velocity
83.3 mphBarrels/BBE
5.6%Spin Rate
2242 rpmBalls Hit 95+ MPH
23.6%Swinging Strike
8.4%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
2022
2021
2020
Gallen turned in another solid but not ace-level season. His career 26.6 percent strikeout rate is very good, but not elite. Last year, it was a career low of 25.1 percent. After two years of declining walk rates, Gallen's 8.7 percent clip was a smidge worse than average. Yielding only 13 homers in 148 frames kept Gallen's ERA in check, but if the 2025 baseball is livelier than the 2024 version, Gallen's ratios could suffer, unless he returns to a lower walk rate. Gallen's velocity was in sync with past seasons, so it's a matter of throwing more strikes. In 2023, 64.5 percent of his pitches were strikes, compared to only 61.9 percent last season. There was a time when Gallen fanned 28 percent of batters and was a back end SP1. He's now a solid SP3, with SP2 upside if he can throw more pitches in the zone.
More Fantasy News
Mauled by Cubs
Gallen (1-2) took the loss Friday, coughing up six runs on seven hits and three walks over 3.2 innings as the Diamondbacks were downed 6-5 by the Cubs. He struck out three.
Analysis
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Cleared to start Friday
The Diamondbacks list Gallen (shoulder) as their starting pitcher for Friday's game against the Cubs, Jack Sommers of SI.com reports.
Analysis
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Cleared for mound work
Gallen (shoulder) is expected to throw a bullpen session Wednesday, Steve Gilbert of MLB.com reports.
Analysis
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Should make next start
Manager Torey Lovullo said Sunday that Gallen (shoulder) was feeling better, and the club is "encouraged" the right-hander will make his next turn through the rotation, Nick Piecoro of The Arizona Republic reports.
Analysis
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Exits game with shoulder injury
Gallen was removed from Saturday's start against the Padres due to a right shoulder contusion, Jody Jackson of Bally Sports Arizona reports.
Analysis
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Latest Fantasy Rumors
Could land with Cubs
The Cubs could be the favorites to sign Gallen, Bruce Levine of the Marquee Sports Network reports.
Analysis
A rival general manager indicated Thursday that they viewed the Cubs as the most likely landing spot for the free-agent hurler. Chicago has been connected to Gallen throughout the offseason, and it seems they could still sign the right-hander even after trading for Edward Cabrera. The Diamondbacks also have interest in bringing Gallen back, but John Gambadoro of Arizona Sports 98.7 FM says there's nothing imminent on that front.
A rival general manager indicated Thursday that they viewed the Cubs as the most likely landing spot for the free-agent hurler. Chicago has been connected to Gallen throughout the offseason, and it seems they could still sign the right-hander even after trading for Edward Cabrera. The Diamondbacks also have interest in bringing Gallen back, but John Gambadoro of Arizona Sports 98.7 FM says there's nothing imminent on that front.