RRosternomics
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JC

John Claiborne

Born 1940 · age 86

General manager for the Cardinals (1979–1980).

0 seasons with salary-era data across 1 stint. All figures are franchise-level outcomes during the tenure, not solely attributable to one executive.

Overview

Titles0
Pennants0
Playoffs0
Record0–0
Win %–
–GM WAR — wins above a replacement GM (org-adjusted, shrunk; per season)
–Depth — 2+ WAR regulars per season (the breadth that drives TAB, not stars)
–Dead WAR — WAR/yr bled by sub-replacement players (closer to 0 = better)
–Dead money — payroll on <0.5-WAR players (lower = better)
+0.0TAB — talent above budget — roster-construction alpha (talent your budget bought above expectation), tenure total
+0.0WAB — realized wins (TAB + the non-repeatable luck of converting talent to wins)
–Acquisition Leverage — playoff pts per acquired WAR, graded once in the year each deal's wins arrive (the repeatable decision skill)
+0Roster surplus $M

Tenure breakdown

TeamRoleYearsSzns WAB WAB/yr TAB WAR surp HG Trade FA R5 AcqLev W-L% POPenWS Surp $M
▸ Cardinals GM 1979–1980 0 +0.0 – +0.0 +0.0 +7.8 -10.0 +0.0 -8.5 – – ––– –
Career total (1985+ data) 0 +0.0 +0.0 +0.0 +7.8 -10.0 +0.0 -8.5 – – –– – +0

Roster Construction

How the roster was sourced

by valueby volume

Share of acquired fWAR by channel vs. league average.

Build channels — net fWAR

Acquired minus surrendered / signed minus walked.

Home-grown (draft/intl)+7.8
Trade-10.0
Free agency+0.0
Rule 5 / minor draft-8.5
Sourcing mix: 99% draft · 0% FA · 1% trade · 0% R5

Players acquired — 2 players, by realized fWAR for the franchise (scroll for more)

PlayerPosTeam How Year Szns fWAR WAR/yr Lev
Andy Van Slyke OF STL Draft 1979 2 +6.8 +3.4 –
Ricky Horton P STL Draft 1980 3 +1.0 +0.3 –

WAB = wins above what the team's payroll predicted (resource-controlled). WAR surplus = era-neutral value (WAR minus payroll in win-equivalents). Roster surplus $M = dollar value of WAR over cost. Build channels (realized fWAR): HG = home-grown via amateur draft / international signing; Trade = acquired minus surrendered (incl. purchases/waivers); FA = signed minus walked; R5 = Rule-5 / minor-league-draft pickups. Credit follows the acquisition year — home-grown to the regime at the player's draft/signing (not whoever was in the chair when he peaked), trade/FA/R5 to the GM who made the move. Players acquired as prospects before debuting (e.g. Smoltz, Bagwell; Rule-5 picks like Uggla) are counted as trade/R5, not home-grown. All are franchise-level outcomes during the stint, not solely attributable to one executive.

Graphs

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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.