Want to see what a player’s future trade value will be? Or estimate his free agent or extension contract? You can play around with all kinds of scenarios here if you’re a GM-level subscriber.

Click on the tabs for each scenario. Here's a video showing how the future trade value tab works. And for free agents and extension candidates, use the dropdown to see how the contract would vary by changing the number of years.

Front Office-level subscribers and above can also see a history of past and present trade values. We also visually display our calculations, so you can see the surplus-value gap between field value and salary in each scenario (except for prospects, who have only implied surplus value). And there's a special subscriber-only comment section below each player's data, so you can have an exclusive conversation with other subscribers.

To give you an idea how it works, we’ll always show a featured player for free.

George Kirby

Mariners

Player Value Timeline

Future Trade Value

George Kirby: Current Control through 2028, Remaining surplus: $107m

Total AFV

Total Surplus

Total Salary

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Stats & Information

AgeLevelP1P2AvailabilityYearsAFVSalarySurplusLowMedianHighFangraphs.com URL
26MajorsSPLow4.8187.780.710785.6107128.4

Recent Trades with George Kirby

Pirates GET

Eugenio Suarez

5.3

Alek Thomas

25.3

Cole Young

24.3

Caden Grice

4.5

59.4

59.5

0.10

Diamondbacks GET

Ke'Bryan Hayes

21

Luke Raley

10.1

Bryan Reynolds

23.5

George Kirby

91.1

145.7

146.1

0.40

Mariners GET

Corbin Carroll

111

Jared Jones

15

126

125.50

-0.50

kurteger

Mariners GET

Stuart Fairchild

3

TJ Friedl

20.2

Ian Gibaut

6.9

Hunter Greene

64.5

Brandon Williamson

13.8

Total Value

108.4

Reds GET

Dylan Moore

1.4

Luke Raley

10.1

George Kirby

91.1

Emerson Hancock

3.8

Total Value

106.40

smooers

Mariners GET

Ke'Bryan Hayes

21

Corbin Carroll

111

Jared Jones

15

Dauri Moreta

1.1

Cash

1

149.1

149.1

0

Diamondbacks GET

Bryan Reynolds

23.5

George Kirby

91.1

114.6

114.3

-0.30

Pirates GET

Luke Raley

10.1

Luis Urias

1.5

Andrew Saalfrank

3.3

Harry Ford

22.1

Cole Young

24.3

61.30

61.6

0.30

kurteger

Mariners GET

Dean Kremer

18.7

Jordan Westburg

28.8

Coby Mayo

43.7

Total Value

91.2

Orioles GET

George Kirby

91.1

Total Value

91.1

Drothenberg

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