2025 Stats
W-L
0-1
ERA
9.00
WHIP
2.00
K
4
SV
0
Rest-of-Season Projections
2025 Fantasy Outlook
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. Read Past Outlooks

Allows four runs Opening Day
Gallen (0-1) took the loss Thursday against the Cubs after giving up four runs on four hits and four walks over four innings. He struck out four.
ANALYSIS
Gallen finished spring training with a 2.89 ERA and 10:5 K:BB in four Cactus League outings, and his command was a bit all over the place again Thursday as he threw just 43 of 83 pitches for strikes. The right-hander will need to get on track quickly, as a matchup with the Yankees likely awaits in his second start of the season next week.
Gallen finished spring training with a 2.89 ERA and 10:5 K:BB in four Cactus League outings, and his command was a bit all over the place again Thursday as he threw just 43 of 83 pitches for strikes. The right-hander will need to get on track quickly, as a matchup with the Yankees likely awaits in his second start of the season next week.
Pitching Stats
Loading Pitching Stats...
2025
2024
2023
2022
2021
2020
2019
Minor League Game Log

Calculate Stats Over Time
Just click on any two dates.
Loading Minor League Pitching Game Log...
Pitching Appearances Breakdown
Average Pitch Count
83
Last 10 Games
83
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 2023
Even Split
2025
-77%
BAA vs RHP
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2023vs Left | .237 | 185 | 54 | 157 | 22 | |||
Since 2023vs Right | .238 | 195 | 51 | 168 | 14 | |||
2025vs Left | .429 | 2 | 3 | 3 | 1 | |||
2025vs Right | .100 | 2 | 1 | 1 | 0 | |||
2024vs Left | .222 | 77 | 25 | 61 | 7 | |||
2024vs Right | .252 | 79 | 29 | 72 | 6 | |||
2023vs Left | .244 | 106 | 26 | 93 | 14 | |||
2023vs Right | .232 | 114 | 21 | 95 | 8 | |||
More Splits→ | View More Split Stats |
Home/Away Pitching Splits
Since 2023
-30%
ERA at Home
2025
-100%
ERA on Road
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2023Home | 3.00 | 1.12 | 189.0 | 10.2 | 2.2 | ||||
Since 2023Away | 4.27 | 1.26 | 173.0 | 8.6 | 3.0 | ||||
2025Home | 9.00 | 2.00 | 4.0 | 9.0 | 9.0 | ||||
2025Away | 0 | 0 | 0 | 0 | 0 | ||||
2024Home | 3.36 | 1.19 | 83.0 | 9.8 | 2.7 | ||||
2024Away | 4.02 | 1.35 | 65.0 | 9.1 | 4.0 | ||||
2023Home | 2.47 | 1.03 | 102.0 | 10.6 | 1.6 | ||||
2023Away | 4.42 | 1.20 | 108.0 | 8.3 | 2.4 | ||||
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
1.00K/9
9.0BB/9
9.0HR/9
2.3Fastball
92.9 mphERA
9.00WHIP
2.00BABIP
.292GB/FB
0.40Left On Base
60.6%Exit Velocity
0.0 mphBarrels/BBE
0.0%Spin Rate
0 rpmBalls Hit 95+ MPH
0.0%Swinging Strike
6.0%Prospect Rankings History
Advanced Pitching Stats
Loading Advanced Pitching Stats...
Defensive Stats
Loading MLB Defensive Stats...
Stats Vs Today's Lineup
Want more matchup stats?
Loading Matchup Stats...
Our full team depth charts are reserved for RotoWire subscribers.
Subscribe Now
Recent RotoWire Articles Featuring Zac Gallen See More

Opening Day is here but there's still time to squeeze in MLB futures. John Venezia checks in with his MLB team futures, including a familiar pick for the World Series.

With supposed paragon of durability George Kirby opening the year on the injured list, it's time to ask whether or not we really have any idea about which pitchers are injury-prone.

Tarik Skubal's Cy Young defense gets off to a tough start this weekend as he takes on the defending champions in Dodger Stadium. Where does he rank in Todd Zola's first pitcher rankings of the year?

The latest update to the RotoWire Roundtable Rankings sees Jackson Chourio move into the back of the first round.
Past Fantasy Outlooks
2024
2023
2022
2021
2020
Gallen had a fantastic season and received some deserved votes for the Cy Young Award as he helped carry the Diamondbacks to their improbable World Series run. Most of his performance indicators were right in line with 2022 but better run support helped raise his wins while a near full-run jump in his ERA can be excused by the BABIP regression which we expected would come after his rather fortunate .237 BABIP in 2022. Simply put, there is not a performance issue to be concerned with as much as a workload concern. Gallen ended up throwing 243.2 innings in 2023, which was almost exactly double what he threw just two seasons ago. He managed a 52% increase in workload just fine from 2021 to 2022, but now we add another 32% increase in workload along with the stress of working in the postseason for the first time and we cannot help but wonder about the impact of that for 2024. 2023 was an excellent season, but it would not surprise us to see Gallen take a step back this season.
More Fantasy News

Makes final spring start
Gallen allowed one run on five hits and two walks while striking out two over 4.1 innings in Thursday's spring start against the Athletics.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Named Opening Day starter
Gallen will start Opening Day, March 27 against the Cubs, Steve Gilbert of MLB.com reports.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Fans three in third spring outing
Gallen allowed one run on three walks while striking out three over two hitless innings in Saturday's split-squad start against the Reds.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Feels better in second start
Gallen allowed two hits while striking out three over two scoreless innings in Saturday's spring start against the Rockies.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Makes first spring appearance
Gallen allowed one run on one hit and struck out two over one inning in Monday's spring game against Cleveland.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Latest Fantasy Rumors

Potential trade chip
The Diamondbacks might consider trading Gallen this offseason, Will Sammon and Patrick Mooney of The Athletic report.
ANALYSIS
Multiple clubs looking for rotation help reached out to the Diamondbacks at this week's general managers' meetings. While it's not clear which of their arms has drawn the most interest, Gallen, Merrill Kelly and Jordan Montgomery will all be free agents following the 2025 season. It would be difficult for Arizona to part with their best starter in Gallen since they want to be competitive next season, but he would also likely bring the best return.
Multiple clubs looking for rotation help reached out to the Diamondbacks at this week's general managers' meetings. While it's not clear which of their arms has drawn the most interest, Gallen, Merrill Kelly and Jordan Montgomery will all be free agents following the 2025 season. It would be difficult for Arizona to part with their best starter in Gallen since they want to be competitive next season, but he would also likely bring the best return.