Rosternomics
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Marlins MIA

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GM: Michael Hill (since 2016)

2018 roster — every player, value & surplus

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-12.5
WAB — wins above budget
-14.0
TAB — roster Talent above budget
63–98 (0.391)
record
-31M
surplus $M (value/$)
14.6
roster fWAR
$82.6M
payroll
PlayerAgeServiceGfWARSalary $MSurplus $M
J.T. Realmuto 27 arb 125 4.7 2.9 +13.0
Brian Anderson 25 pre-arb 156 3.0 0.5 +9.7
Starlin Castro 28 FA-elig 154 2.8 10.9 -1.3
Miguel Rojas 29 arb 153 1.4 1.2 +3.7
José Ureña 26 pre-arb 32 1.4 0.6 +4.1
JT Riddle 26 pre-arb 102 1.3 0.5 +4.0
Caleb Smith 26 pre-arb 16 1.2 1.1 +2.9
Trevor Richards 25 – 25 1.1 0.4 +3.3
Wei-Yin Chen 32 FA-elig 27 1.1 10.0 -6.3
Justin Bour↔ PHI 30 arb 112 0.9 2.7 +0.3
Cameron Maybin↔ SEA 31 FA-elig 99 0.6 2.5 -0.5
Peter O'Brien 27 pre-arb 22 0.5 0.1 +1.7
Dan Straily 29 FA-elig 26 0.5 3.4 -1.7
Pablo López 22 – 12 0.5 0.3 +1.4
Drew Steckenrider 27 pre-arb 71 0.5 1.1 +0.6
Derek Dietrich 28 arb 149 0.4 2.9 -1.4
Adam Conley 28 pre-arb 52 0.4 0.4 +0.9
Nick Wittgren 27 pre-arb 32 0.4 0.3 +0.9
Bryan Holaday 30 FA-elig 61 0.3 1.0 +0.0
Chad Wallach 26 pre-arb 15 0.3 0.5 +0.4
Odrisamer Despaigne↔ ANA 31 arb 11 0.2 0.6 +0.2
Isaac Galloway 28 – 43 0.2 0.2 +0.5
Garrett Cooper 27 pre-arb 14 0.2 0.5 -0.0
Tyler Kinley↔ MIN 27 pre-arb 9 0.1 0.4 +0.0
Martín Prado 34 FA-elig 54 0.1 13.5 -13.1
Drew Rucinski 29 pre-arb 32 0.1 0.4 -0.1
Sandy Alcantara 22 pre-arb 6 0.1 0.2 +0.0
Christopher Bostick↔ PIT 25 – 13 -0.0 – –
Javy Guerra 32 arb 32 -0.0 0.2 -0.3
Merandy Gonzalez 22 pre-arb 8 -0.1 0.1 -0.4
Tomás Telis 27 arb 23 -0.1 0.5 -0.8
Dillon Peters 25 pre-arb 7 -0.1 1.1 -1.5
Yadiel Rivera 26 pre-arb 111 -0.1 0.5 -1.0
Tyron Guerrero 27 pre-arb 60 -0.2 0.5 -1.1
Jeff Brigham 26 – 4 -0.2 0.1 -0.6
Jacob Turner↔ DET 27 FA-elig 4 -0.2 1.6 -2.2
Brett Graves 25 pre-arb 21 -0.2 1.1 -1.7
Austin Dean 24 – 34 -0.2 0.1 -0.8
Braxton Lee 24 pre-arb 8 -0.2 1.1 -1.7
Chris O'Grady 28 pre-arb 8 -0.2 1.1 -1.8
Tyler Cloyd 31 pre-arb 7 -0.2 0.1 -0.9
Ben Meyer 25 – 13 -0.3 0.3 -1.4
Junichi Tazawa↔ ANA 32 FA-elig 22 -0.4 5.0 -6.4
Brad Ziegler↔ ARI 38 FA-elig 53 -0.5 5.8 -7.4
Rafael Ortega 27 – 41 -0.5 – –
Elieser Hernández 23 pre-arb 32 -0.6 1.1 -3.1
Kyle Barraclough 28 arb 61 -0.6 1.1 -3.2
Magneuris Sierra 22 pre-arb 54 -1.0 0.2 -3.7
JB Shuck 31 FA-elig 70 -1.1 0.8 -4.4
Lewis Brinson 24 pre-arb 109 -1.2 0.5 -4.8
Jarlín García 25 pre-arb 29 -1.4 0.6 -5.3

51 players appeared (WAR is complete); salary & surplus are on record for 49 of them (96%). Players without a salary show "–" — no single historical salary source is fully complete (especially 2020–2022).

WAR = FanGraphs (fWAR). Green = produced more value than paid (bargain); red = paid more than produced. Service: pre-arb (<3 yr) / arb (3–6) / FA-eligible (6+). Click headers to sort.

History: front-office performance & develop-vs-buy (1985–2024)

Trade ledger (realized WAR, all-time)

Best acquisitions
PlayerYearWAR for MIA
Hanley Ramírez200529.1
Dontrelle Willis200220.7
Ricky Nolasco200517.5
A. J. Burnett199816.1
Gary Sheffield199313.6
Cliff Floyd199713.2
Derrek Lee199710.6
Aníbal Sánchez20059.9
Ones that got away
PlayerYear tradedWAR elsewhere
Johan Santana199932.0
Christian Yelich201828.6
J. T. Realmuto201925.7
Trevor Hoffman199324.3
Derrek Lee200321.4
Josh Beckett200520.1
Édgar Rentería199817.4
Gary Sheffield199814.7
Rosternomics — quantifying front-office skill, attribution-clean. Follow @rosternomics on X. Decision-makers on record back to 1933; resource-controlled metrics (WAR & payroll) cover 1985–2026.
Data: FanGraphs (WAR), Baseball-Reference & the Chadwick Bureau register (rosters, IDs), the Lahman Database, Baseball America prospect rankings (via The Baseball Cube), and public payroll records. Transaction and trade data was obtained free of charge from and is copyrighted by Retrosheet. Executive birth/death data via Wikidata (CC0); bios are original. Emoji graphics by OpenMoji (CC BY-SA 4.0).
All figures are franchise-level outcomes credited to the decision-maker in the acquisition year — not solely attributable to one executive.