Rosternomics
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Orioles BAL

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GM: Roland Hemond (since 1988)

1991 roster — every player, value & surplus

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-9.7
WAB — wins above budget
+7.0
TAB — roster Talent above budget
67–95 (0.414)
record
+6M
surplus $M (value/$)
36.2
roster fWAR
$15.2M
payroll
PlayerAgeServiceGfWARSalary $MSurplus $M
Cal Ripken Jr. 30 FA-elig 162 10.6 2.6 +3.7
Mike Devereaux 28 arb 149 4.5 0.2 +2.5
Bob Milacki 26 arb 31 2.7 0.3 +1.3
Todd Frohwirth 28 arb 51 2.6 0.1 +1.4
Gregg Olson 24 arb 72 2.2 0.5 +0.8
Leo Gomez 25 pre-arb 118 2.1 0.1 +1.2
Randy Milligan 29 arb 141 1.9 0.3 +0.8
Mike Mussina 22 pre-arb 12 1.7 0.1 +0.9
Chris Hoiles 26 pre-arb 107 1.7 0.1 +0.9
Chito Martinez 25 – 67 1.5 – –
Joe Orsulak 29 FA-elig 143 1.4 1.1 -0.3
Ben McDonald 23 pre-arb 21 1.3 0.5 +0.3
Mike Flanagan 39 FA-elig 64 1.3 0.2 +0.5
Sam Horn 27 arb 121 1.3 0.2 +0.6
Brady Anderson 27 arb 113 1.0 0.2 +0.4
Jose Mesa 25 arb 24 0.8 0.1 +0.4
Dwight Evans 39 FA-elig 101 0.8 0.8 -0.3
Jim Poole↔ TEX 25 pre-arb 24 0.7 0.1 +0.3
Jeff Ballard 27 arb 26 0.6 0.5 -0.1
Roy Smith 29 – 17 0.4 – –
Jeff Robinson 29 arb 21 0.4 0.6 -0.3
Anthony Telford 25 – 9 0.3 – –
Craig Worthington 26 arb 31 0.2 0.2 -0.1
Glenn Davis 30 FA-elig 49 0.2 3.3 -3.2
Ernie Whitt 39 – 35 0.2 – –
Stacy Jones 24 – 4 0.1 – –
Arthur Rhodes 21 pre-arb 8 0.1 0.1 -0.0
Francisco de la Rosa 25 – 2 0.0 – –
Mark Williamson 31 arb 65 -0.0 0.7 -0.7
Shane Turner 28 – 4 -0.0 – –
Bob Melvin 29 FA-elig 79 -0.1 0.7 -0.7
Jeff Tackett 25 – 6 -0.1 – –
Jose Bautista 26 arb 5 -0.2 0.1 -0.2
Tim Hulett Sr. 31 FA-elig 79 -0.2 0.3 -0.4
Kevin Hickey 35 – 19 -0.2 – –
Paul Kilgus 29 arb 38 -0.4 0.2 -0.4
Billy Ripken 26 arb 104 -0.5 0.7 -1.0
Jeff McKnight 28 – 16 -0.5 – –
Dave Johnson 31 arb 22 -0.7 0.2 -0.6
Luis Mercedes 23 – 19 -0.9 – –
Juan Bell 23 pre-arb 100 -1.4 0.1 -0.9
David Segui 24 pre-arb 86 -1.4 0.1 -0.9

42 players appeared (WAR is complete); salary & surplus are on record for 31 of them (74%). 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 BAL
Brady Anderson198833.0
Adam Jones200829.6
Melvin Mora200026.9
Chris Hoiles198824.8
Scott Erickson199516.4
J. J. Hardy201014.3
Randy Milligan198811.9
Mike Devereaux198911.7
Ones that got away
PlayerYear tradedWAR elsewhere
Dennis Martínez198622.5
Jake Arrieta201319.6
Bryn Smith197716.4
Mickey Tettleton199114.4
Eduardo Rodríguez201414.3
Mike Yastrzemski201911.3
Eddie Murray198810.8
José Mesa19929.1
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.