Rosternomics
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Athletics OAK

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GM: David Forst (since 2016)

2020 roster — every player, value & surplus

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+17.8 pace
WAB — wins above budget (162-game pace)
+10.1 pace
TAB — roster Talent above budget (162-game pace)
36–24 (0.600)
record · made playoffs
+17M
surplus $M (value/$)
15.5
roster fWAR
$96.8M
payroll
PlayerAgeServiceGfWARSalary $MSurplus $M
Sean Murphy 25 pre-arb 43 1.6 0.2 +11.3
Robbie Grossman 30 FA-elig 51 1.5 3.7 +7.3
Mark Canha 31 arb 59 1.5 4.8 +6.1
Liam Hendriks 31 FA-elig 24 1.4 5.3 +4.9
Chris Bassitt 31 FA-elig 11 1.3 2.2 +7.2
Ramón Laureano 25 pre-arb 54 1.1 0.2 +8.1
Matt Chapman 27 pre-arb 37 1.1 0.2 +7.7
Sean Manaea 28 arb 11 1.1 3.8 +4.1
Jesús Luzardo 22 pre-arb 12 0.8 0.2 +5.6
Tommy La Stella↔ ANA 31 FA-elig 27 0.7 1.6 +3.6
Mike Fiers 35 FA-elig 11 0.6 8.1 -3.7
Tony Kemp 28 pre-arb 49 0.5 0.2 +3.7
Matt Olson 26 pre-arb 60 0.5 0.2 +3.7
Joakim Soria 36 FA-elig 22 0.5 8.5 -4.7
Jake Diekman 33 FA-elig 21 0.5 2.8 +0.9
Mike Minor↔ TEX 32 FA-elig 5 0.5 4.1 -0.5
Frankie Montas 27 pre-arb 11 0.4 0.2 +3.0
J.B. Wendelken 27 pre-arb 21 0.4 0.2 +2.8
Burch Smith 30 pre-arb 6 0.4 0.3 +2.4
Jake Lamb↔ ARI 29 FA-elig 13 0.3 2.3 +0.1
Marcus Semien 29 FA-elig 53 0.3 13.0 -11.0
Chad Pinder 28 arb 24 0.2 2.0 -0.7
Lou Trivino 28 pre-arb 20 0.1 0.2 +0.8
Jordan Weems 27 – 9 0.1 0.2 +0.8
Yusmeiro Petit 35 FA-elig 26 0.1 5.5 -4.7
Paul Blackburn 26 pre-arb 1 0.0 0.0 +0.2
Austin Allen 26 pre-arb 14 0.0 0.1 +0.0
Daniel Mengden 27 pre-arb 4 -0.1 0.2 -0.6
Seth Brown 27 pre-arb 7 -0.1 0.1 -0.9
Jonah Heim 25 – 13 -0.1 0.1 -0.9
Khris Davis 32 FA-elig 30 -0.1 16.8 -17.7
James Kaprielian 26 – 2 -0.2 0.0 -1.1
Daulton Jefferies 24 – 1 -0.2 0.0 -1.6
Stephen Piscotty 29 arb 45 -0.2 7.3 -8.9
Vimael Machín 26 – 24 -0.2 0.2 -1.8
Franklin Barreto↔ ANA 24 – 15 -0.2 0.1 -1.9
Nate Orf 30 – 6 -0.3 0.0 -2.0
T.J. McFarland 31 FA-elig 23 -0.4 1.8 -4.6

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 OAK
Rickey Henderson198926.8
Mark Ellis200122.1
Dennis Eckersley198719.3
Carney Lansford198216.7
Josh Donaldson200813.8
Jed Lowrie201313.0
Brett Anderson200711.5
Sean Manaea201511.2
Ones that got away
PlayerYear tradedWAR elsewhere
Rickey Henderson198426.6
Carlos González200824.7
Andre Ethier200524.4
Gio Gonzalez201120.8
Josh Donaldson201420.4
Mark McGwire199719.7
Aaron Harang200319.3
Jeremy Bonderman200215.8
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.