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.

Ketel Marte

Diamondbacks

Player Value Timeline

Future Trade Value

Ketel Marte: Current Control through 2030, Remaining surplus: $104.8m

Total AFV

Total Surplus

Total Salary

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Stats & Information

AgeLevelP1P2AvailabilityYearsAFVSalarySurplusLowMedianHighFangraphs.com URL
31Majors2BOFLow5.5202.697.8104.883.9104.8125.8

Recent Trades with Ketel Marte

Red Sox GET

Merrill Kelly

6.1

Ketel Marte

86.5

Geraldo Perdomo

88.8

Eugenio Suarez

5.6

Adrian Del Castillo

10.1

Total Value

197.1

Diamondbacks GET

Brayan Bello

28.5

Luis Perales

11.3

Wilyer Abreu

35.7

Jhostynxon Garcia

12.2

Kristian Campbell

59.9

Franklin Arias

15

Total Value

162.6

Ezekiel49

Diamondbacks GET

Jasson Dominguez

20.2

Will Warren

37.7

Logan Evans

11

68.9

69.80

0.90

Mariners GET

Josh Naylor

4.6

Eugenio Suarez

5.6

10.2

11

0.80

Yankees GET

Zac Gallen

4.2

Ketel Marte

86.5

Eduardo Rodriguez

-26.5

Pavin Smith

7.5

Jordan Montgomery

-12.1

59.60

57.90

-1.70

NOVOTNYZACK

Diamondbacks GET

George Kirby

80.6

Cole Young

21.9

Brody McCullough

2.1

Jeter Martinez

2.3

106.90

107.6

0.70

Cubs GET

Zac Gallen

4.5

Merrill Kelly

6.2

Eugenio Suarez

4.7

Jordan Montgomery

-12.8

2.60

2.1

-0.50

Mariners GET

Ketel Marte

99.8

Josh Naylor

5.2

105

104.8

-0.20

NOVOTNYZACK

Diamondbacks GET

Roderick Arias

8.2

Elmer Rodriguez-Cruz

5.2

Will Warren

29.8

Spencer Jones

10.2

Bryce Cunningham

9.9

Total Value

63.30

Yankees GET

Ketel Marte

99.8

Eduardo Rodriguez

-26.8

Total Value

73

JonahS23

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