George Kirby

Seattle Mariners, Starting Pitcher
Age: 26y-10m-18d (Feb 04, 1998)
Exp: 2.151 Years
Country: US
College: Elon
Drafted: Round 1 (#20 overall), 2019
2025 Payroll Salary

$4,500,000

2025 Cash

$4,500,000

Career Earnings

$6,678,528

2025-2025 Arbitration (CURRENT)

George Kirby signed a 1 year , $4,500,000 contract with the Seattle Mariners, including $4,500,000 guaranteed, and an average annual salary of $4,500,000. In 2025, Kirby will earn a base salary of $4,500,000, while carrying a total salary of $4,500,000.
Contract Terms:
1 yr(s) / $4,500,000
Average Salary:
$4,500,000
Signing Bonus:
N/A
Free Agent:
2029 / UFA
Year Age Status PayrollAnnual Luxury Tax Tax % League Tax Cash Annual Cash Cumulative
2025 27
Estimate
 $4,500,000 $4,500,000 1.87% $4,500,000 $4,500,000
2026 28
ARB 2
2027 29
ARB 3
2028 30
ARB 4
2029 31
UFA
Year Age Service Status Base Salary Incentives Likely Incentives Unlikely Payroll Salary Luxury Tax
2025 27 2.151
Estimate
 $4,500,000 - - $4,500,000 $4,500,000
2026 28 --
ARB 2
2027 29 --
ARB 3
2028 30 --
ARB 4
2029 31 --
UFA
Year Age Status Base Salary Cash Total Cash Cumulative Cash Remaining AYC Cumulative AYC Remaining
2025 27
Estimate
 $4,500,000 $4,500,000 $4,500,000 - $4,500,000 $4,500,000
Source: MLB contract specifics generally collected from verified reports.

2024-2024
Pre-Arbitration

George Kirby signed a 1 year , $798,600 contract with the Seattle Mariners, including $798,600 guaranteed, and an average annual salary of $798,600.
Contract Terms:
1 yr(s) / $798,600
Average Salary:
$798,600
Signing Bonus:
N/A
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2023-2023
Pre-Arbitration

George Kirby signed a 1 year , $758,300 contract with the Seattle Mariners, including $758,300 guaranteed, and an average annual salary of $758,300.
Contract Terms:
1 yr(s) / $758,300
Average Salary:
$758,300
Signing Bonus:
N/A
Spotrac Premium Tools
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2022-2022
Pre-Arbitration

George Kirby signed a 1 year , $700,000 contract with the Seattle Mariners, including $700,000 guaranteed, and an average annual salary of $700,000.
Contract Terms:
1 yr(s) / $700,000
Average Salary:
$700,000
Signing Bonus:
N/A
Spotrac Premium Tools
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2019-2019 Signing Bonus

George Kirby signed a 1 year , $3,242,900 contract with the Seattle Mariners, including $3,242,900 guaranteed, and an average annual salary of $3,242,900.
Contract Terms:
1 yr(s) / $3,242,900
Average Salary:
$3,242,900
Signing Bonus:
N/A
Spotrac Premium Tools
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Seasons

2.151 Years

Career Earnings thru 2025

$6,678,528

Earnings w/ Different Teams

1 team

Earnings Per Year

Year Age Team(s) Status Cash Total Cash Cumulative Awards
2019 21
Signing Bonus
$3,242,900
$3,242,900
2022 24
Active
$819,434
$4,062,334
2023 25
Active
$1,371,307
$5,433,641
2024 26
Active
$1,244,887
$6,678,528
Total      
$6,678,528
$6,678,528
2025 27
Active / estimate-arbitration
$4,500,000
Total
$11,178,528

Earnings Per Team

Years Team Base Signing Incentives Cash Cumulative
4 $2,076,110 $3,242,900 $1,359,518 $6,678,528
Year Team(s) Age Base Signing Incentives Cash Total Cash Cumulative
2019
21
$3,242,900
$3,242,900
$3,242,900
2022
24
$519,210
$300,224
$819,434
$4,062,334
2023
25
$758,300
$613,007
$1,371,307
$5,433,641
2024
26
$798,600
$446,287
$1,244,887
$6,678,528
Total
$2,076,110
$3,242,900
$1,359,518
$6,678,528
$6,678,528
2025
27
$4,500,000
$4,500,000
Total
$6,576,110
$3,242,900
$1,359,518
$11,178,528

Earnings Per Team

Years Team Base Signing Incentives Cash Cumulative
4 $2,076,110 $3,242,900 $1,359,518 $6,678,528
  • Mar 01, 2024 Signed a 1 year $798,600 contract with Seattle (SEA)
  • Mar 01, 2023 Signed a 1 year $758,300 contract with Seattle (SEA)
  • Jul 26, 2022 Promoted from the Minors by Seattle (SEA)
  • Jul 10, 2022 Demoted to the Minors by Seattle (SEA)
  • May 07, 2022 Contract purchased by Seattle (SEA)
  • Jun 05, 2019 Signed a contract with Seattle (SEA)
  • Jun 03, 2019 Drafted by Seattle (SEA): Round 1 (#20 overall)
  • Jul 15, 2016 Unsigned by New York (NYM)
  • Jun 11, 2016 Drafted by New York (NYM): Round 32 (#970 overall)
Year Team GP GS H R ER BB K HR W L SV IP ERA WHIP WAR
2024 SEA 33 33 181 82 75 23 179 22 14 11 0 191.0 3.53 1.07 1.92
2023 SEA 31 31 179 74 71 19 172 22 13 10 0 190.7 3.35 1.04 3.92
2022 SEA 25 25 135 54 49 22 133 13 8 5 0 130.0 3.39 1.21 1.37

Calculated Market Value

$22.6M Avg. Annual Salary

Market Value

  • 10 years, $226,185,580
  • Avg. Salary: $22,618,558
  • MLB Rank: 45
  • SP Rank: 14

Current Contract

  • Free Agent: 2029
  • Avg. Salary: $4,500,000
  • MLB Rank: 245
  • SP Rank: 85

Comparable Players

We've selected the following players based on their age, contract status, and statistical production to compare George Kirby to.

Player Length Value Avg. Salary Age When Signed
Patrick Corbin 6 $140,000,000 $23,333,333 29
Aaron Nola 7 $172,000,000 $24,571,429 30
Chris Bassitt 3 $63,000,000 $21,000,000 33
Hyun-Jin Ryu 4 $80,000,000 $20,000,000 32
Averages 5 $113,750,000 $22,226,191 31.0

Base Calculated Value

After adjusting the above contracts as if signed at Kirby's current age (26), a linear regression is performed, providing us with the following initial value.

Length Value Avg. Salary
10 $222,963,750 $22,296,375

Statistical Comparisons

Now we'll compare our variables and Kirby statistically over the two seasons prior to their signing. In this case we're analyzing: GS/Yr, IP, K/9, BB/9, ERA, WHIP, FIP, WAR

Player GS/Yr IP K/9 BB/9 ERA WHIP FIP WAR
Patrick Corbin
2017-2018
 32.50 5.73 5.60 1.25 3.60 1.24 3.28 3.62
Aaron Nola
2022-2023
 32.00 6.23 9.86 1.68 3.86 1.06 3.30 4.24
Chris Bassitt
2021-2022
 28.50 5.95 8.68 2.33 3.29 1.10 3.50 4.30
Hyun-Jin Ryu
2018-2019
 22.00 5.76 8.88 1.41 2.15 1.01 3.05 5.65
Average 28.75 5.92 8.26 1.67 3.23 1.10 3.28 4.45
George Kirby
2023-2024
 32.00 5.96 8.27 0.99 3.44 1.05 3.30 3.10
Pct Change 11.30 0.68 0.12 40.72 -6.50 4.55 -0.61 -30.34
Median Prime % Change 0.40%
Average Prime % Change 2.49%

Calculated Market Value: George Kirby

After applying our Prime % figures into our base calculated value, we're given two values. The average of these values becomes our current calculated market value.

Terms Avg. Salary
10 years, $226,185,580 $22,618,558

FEATURED PLAYER NEWS

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2025 MLB Offseason Contract Breakdowns

Spotrac details the largest free agent signings and contract extensions across MLB throughout the 2025 offseason. READ MORE

TRANSACTIONS

Mar 01, 2024
Signed a 1 year $798,600 contract with Seattle (SEA)
Mar 01, 2023
Signed a 1 year $758,300 contract with Seattle (SEA)
Jul 26, 2022
Promoted from the Minors by Seattle (SEA)
Jul 10, 2022
Demoted to the Minors by Seattle (SEA)
May 07, 2022
Contract purchased by Seattle (SEA)
Jun 05, 2019
Signed a contract with Seattle (SEA)
Jun 03, 2019
Drafted by Seattle (SEA): Round 1 (#20 overall)
Jul 15, 2016
Unsigned by New York (NYM)
Jun 11, 2016
Drafted by New York (NYM): Round 32 (#970 overall)

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