Rosternomics
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Athletics OAK

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GM: David Forst (since 2016)

2021 roster — every player, value & surplus

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+7.9
WAB — wins above budget
+7.6
TAB — roster Talent above budget
86–76 (0.531)
record
+31M
surplus $M (value/$)
38.3
roster fWAR
$94.2M
payroll
PlayerAgeServiceGfWARSalary $MSurplus $M
Matt Olson 27 arb 156 5.0 5.0 +11.1
Frankie Montas 28 FA-elig 32 4.0 1.8 +11.1
Matt Chapman 28 arb 151 3.7 6.5 +5.5
Sean Manaea 29 arb 32 3.4 6.0 +5.2
Chris Bassitt 32 FA-elig 27 3.3 4.9 +5.8
Sean Murphy 26 pre-arb 119 3.3 0.6 +10.0
Tony Kemp 29 arb 131 3.0 1.1 +8.6
Mark Canha 32 FA-elig 141 2.9 6.9 +2.5
Cole Irvin 27 pre-arb 32 2.0 0.6 +6.0
Starling Marte↔ MIA 32 FA-elig 56 2.0 5.8 +0.8
Ramón Laureano 26 pre-arb 88 1.8 0.6 +5.3
Elvis Andrus 32 FA-elig 146 1.6 14.2 -8.9
James Kaprielian 27 pre-arb 24 1.3 0.4 +3.7
Seth Brown 28 pre-arb 111 1.1 0.5 +3.1
Jed Lowrie 37 FA-elig 139 0.9 1.5 +1.3
Lou Trivino 29 arb 71 0.6 0.9 +1.0
Andrew Chafin↔ CHC 31 FA-elig 28 0.5 0.9 +0.6
Deolis Guerra 32 FA-elig 53 0.4 0.6 +0.7
Josh Harrison↔ WSN 33 FA-elig 48 0.3 0.3 +0.5
Yan Gomes↔ WSN 33 FA-elig 40 0.3 2.3 -1.5
J.B. Wendelken↔ ARI 28 – 26 0.2 0.3 +0.5
Sergio Romo 38 FA-elig 66 0.2 2.2 -1.6
Chad Pinder 29 arb 75 0.2 2.3 -1.8
A.J. Puk 26 pre-arb 12 0.1 0.3 +0.2
Austin Allen 27 pre-arb 4 0.1 0.1 +0.3
Daulton Jefferies 25 pre-arb 5 0.1 0.1 +0.1
Burch Smith 31 FA-elig 31 0.1 0.7 -0.4
Luis Barrera 25 pre-arb 6 0.1 0.0 +0.2
Reymin Guduan 29 pre-arb 11 0.0 0.2 -0.2
Michael Feliz↔ BOS 28 FA-elig 1 -0.0 0.0 -0.1
Yusmeiro Petit 36 FA-elig 78 -0.0 2.5 -2.7
Pete Kozma 33 arb 3 -0.0 0.0 -0.2
Cam Bedrosian↔ CIN 29 FA-elig 9 -0.1 0.5 -0.7
Paul Blackburn 27 pre-arb 9 -0.1 0.1 -0.3
Sam Moll 29 pre-arb 8 -0.1 0.1 -0.3
Jordan Weems↔ ARI 28 – 5 -0.1 0.1 -0.3
Jacob Wilson↔ HOU 30 – 6 -0.1 0.0 -0.3
Jake Diekman 34 FA-elig 67 -0.1 4.0 -4.3
Mitch Moreland 35 FA-elig 81 -0.1 2.2 -2.6
Domingo Acevedo 27 pre-arb 10 -0.1 0.1 -0.5
Frank Schwindel↔ CHC 29 – 8 -0.2 0.0 -0.5
Khris Davis↔ TEX 33 FA-elig 20 -0.2 8.0 -8.6
Adam Kolarek 32 pre-arb 12 -0.2 0.1 -0.9
Mike Fiers 36 – 2 -0.3 – –
Ka'ai Tom↔ PIT 27 – 9 -0.3 0.1 -1.1
Jesús Luzardo↔ MIA 23 – 13 -0.3 0.1 -1.2
Vimael Machín 27 pre-arb 15 -0.4 0.1 -1.5
Aramis Garcia 28 pre-arb 32 -0.4 0.4 -1.8
Stephen Piscotty 30 FA-elig 72 -0.4 7.6 -9.0
Skye Bolt↔ SFG 27 pre-arb 32 -0.6 0.2 -2.0

50 players appeared (WAR is complete); salary & surplus are on record for 49 of them (98%). 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 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.