2025 Stats
W-L
4-4
ERA
4.50
WHIP
1.15
K
56
SV
0
Rest-of-Season Projections
2025 Fantasy Outlook
For the second straight year, Kirby had the lowest walk rate among qualified starters. He got off to a rocky start with an eight-run blowup in his second outing of the year and a 4.33 ERA through his first 11 starts. However, Kirby then turned in nine consecutive quality starts from June 9 to July 26. Water usually finds its level, and Kirby's 3.53 ERA at the end of the year was pretty much right in line with the underlying skills (3.58 xFIP, 3.56 SIERA). He's reached 190 innings in back-to-back seasons, but that is likely out of reach for 2025 given Kirby will start the year on the year with a shoulder issue. The other problem is that he still has not shown any growth with his strikeout rate, which has hovered right around 23 percent in each of his three seasons in the majors so far. It's not out of the question that the right pitch-mix tweak could unlock another level with the punchouts, but that's purely conjecture at this point. Read Past Outlooks

Shaky in victory
Kirby (4-4) earned the win after throwing five innings, allowing four runs on five hits and three walks while striking out six, during Saturday's 15-7 win over the Tigers.
Analysis
Kirby made it nine straight starts throwing at least five innings after his performance Saturday. The Tigers got to him for four runs, tied for the most runs he's allowed in a start since the start of June, but the Mariners gave him good enough run support to get him his fourth win. The 27-year-old enters the All-Star break with a 4.50 ERA, 1.15 WHIP and 56 strikeouts in 54 innings pitched.
Kirby made it nine straight starts throwing at least five innings after his performance Saturday. The Tigers got to him for four runs, tied for the most runs he's allowed in a start since the start of June, but the Mariners gave him good enough run support to get him his fourth win. The 27-year-old enters the All-Star break with a 4.50 ERA, 1.15 WHIP and 56 strikeouts in 54 innings pitched.
Pitching Stats
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2025 MLB Game Log
2025
2024
2023
2022
2020
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
89
Last 10 Games
89
Last 5 Games
90
How many pitches does George Kirby 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 George Kirby 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
-7%
BAA vs RHP
2025
-25%
BAA vs RHP
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2023vs Left | .255 | 198 | 36 | 200 | 29 | |||
Since 2023vs Right | .237 | 209 | 18 | 210 | 23 | |||
2025vs Left | .277 | 28 | 10 | 31 | 7 | |||
2025vs Right | .207 | 28 | 2 | 19 | 1 | |||
2024vs Left | .257 | 88 | 15 | 86 | 12 | |||
2024vs Right | .234 | 91 | 8 | 95 | 10 | |||
2023vs Left | .246 | 82 | 11 | 83 | 10 | |||
2023vs Right | .247 | 90 | 8 | 96 | 12 | |||
More Splits→ | View More Split Stats |
Home/Away Pitching Splits
Since 2023
-28%
ERA at Home
2025
-33%
ERA at Home
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2023Home | 2.97 | 0.98 | 203.0 | 9.1 | 1.2 | ||||
Since 2023Away | 4.10 | 1.14 | 232.2 | 7.8 | 1.1 | ||||
2025Home | 3.62 | 1.21 | 27.1 | 8.6 | 2.0 | ||||
2025Away | 5.40 | 1.09 | 26.2 | 10.1 | 2.0 | ||||
2024Home | 3.06 | 1.01 | 82.1 | 9.2 | 1.1 | ||||
2024Away | 3.89 | 1.11 | 108.2 | 7.9 | 1.1 | ||||
2023Home | 2.70 | 0.89 | 93.1 | 9.3 | 1.0 | ||||
2023Away | 3.98 | 1.18 | 97.1 | 7.0 | 0.8 | ||||
More Splits→ | View More Split Stats |
Stat Review
How does George Kirby 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
5.56K/9
9.2BB/9
1.7HR/9
1.3Fastball
96.0 mphERA
4.22WHIP
1.10BABIP
.301GB/FB
1.43Left On Base
70.1%Exit Velocity
82.1 mphBarrels/BBE
4.8%Spin Rate
2187 rpmBalls Hit 95+ MPH
21.8%Swinging Strike
11.4%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
2024
2023
2022
2021
2020
After being highly touted as a prospect, Kirby showed great promise in his debut season in 2022. The right-hander took his game to another level in his sophomore campaign, shaving his walk rate from 4.1% to a minuscule 2.5%, the lowest among qualified starters. Kirby has already made history multiple times with his strike-throwing; he tossed 24 consecutive strikes at one point as a rookie and now owns the record for the most quality starts with zero walks (11) by a pitcher age 25 or younger. Kirby lowered his WHIP from 1.21 as a rookie to 1.04 last season while adding more than 60 innings to his 2022 total. His five-pitch mix would seem to give him some room for growth in the strikeout department (career 23.5 K%), but until we see that growth, Kirby should probably remain just outside the fantasy ace tier.
More Fantasy News

Cruises to third win
Kirby (3-4) earned the win in Sunday's game against the Pirates, allowing four hits and no walks across 6.1 scoreless innings with nine strikeouts.
Analysis
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In control for second win
Kirby (2-4) allowed one run on three hits and struck out five without walking a batter over six innings to earn the win over the Royals on Monday.
Analysis
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Hard-luck loss in six strong frames
Kirby (1-4) was saddled with the loss Wednesday against the Twins, giving up one run on three hits and one walk in six innings. He struck out three.
Analysis
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Allows two homers in no-decision
Kirby did not factor into the decision in Friday's 9-4 win against the Cubs, allowing four runs on seven hits and one walk with three strikeouts over five innings.
Analysis
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Takes no-decision Saturday
Kirby allowed two runs on five hits and three walks while striking out five over five innings in a no-decision versus the Guardians on Saturday.
Analysis
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Latest Fantasy Rumors

Not untouchable?
Kirby could be included as part of a package for Shohei Ohtani, speculates Jim Bowden of The Athletic.
Analysis
Kirby, a 2019 first-round pick, owns a 3.43 ERA this season and a 3.41 ERA across 43 career starts. His .266 expected batting average is subpar, but he counters that with excellent control that's evidenced by his 2.4 percent walk rate, which is the best mark among all qualifiers. He's a logically desirable target in the context of an Ohtani blockbuster.
Kirby, a 2019 first-round pick, owns a 3.43 ERA this season and a 3.41 ERA across 43 career starts. His .266 expected batting average is subpar, but he counters that with excellent control that's evidenced by his 2.4 percent walk rate, which is the best mark among all qualifiers. He's a logically desirable target in the context of an Ohtani blockbuster.