WAR Surplus — Era-Neutral Value

The same surplus idea, expressed in wins instead of dollars — so a 1990 bargain and a 2025 bargain are directly comparable.

What it measures

Raw dollar surplus is dominated by inflation — a win cost ~$0.5M in 1990 and ~$8M today, so modern players swamp the all-time dollar leaderboards. WAR Surplus fixes that by charging a player's salary in win-units: how many wins he produced above the number his salary "should" have bought at that year's price. It's the cross-era-fair version of efficiency.

The model

Using the same season win-price \(r_t = \sum\text{salary}/\sum\max(\text{WAR},0)\), convert a player's salary into the wins it could have purchased, and subtract from his actual WAR:

Equivalently it's just dollar surplus divided by the era's price-of-a-win — putting 1985 and 2026 on one ruler, denominated in wins.

How to read it

• Units: wins of value above what the salary paid for.
• +5 means the player produced five more wins than his paycheck bought at market rate — regardless of whether that paycheck was $1M (1990) or $15M (2025).
• Use this — not dollar surplus — whenever you compare players or GMs across eras. The all-time WAR-surplus leaders are a healthy mix of decades; the dollar list is all recent.

Is it a skill, and does it predict?

• Stickiness (within-GM, year-over-year): +0.65 — essentially tied with dollar surplus for the stickiest metric. Once era inflation is removed, efficiency is still the most repeatable trait a front office has.
• Predictiveness: +0.09 with making the playoffs and ≈ −0.05 with the World Series — again, nearly orthogonal to winning.
• Same caution as dollar surplus, now era-fair: it ranks how cheaply you acquire wins, not whether those wins are aimed at October. A perennial seller can top this list. Read it alongside Acquisition Leverage to tell thrifty-and-rebuilding from thrifty-and-contending.

The receipts — playoff rate by team-season WAR surplus

Every team-season (1985–2025) bucketed by its era-neutral WAR surplus:

Barely a slope at all — nothing like WAB's 0%→81% staircase. The most efficient rosters reach October ~40% of the time vs ~25% for the least efficient: a faint edge, no more. And as with dollar surplus, the WS column is dead flat at 1–4%. Cheap wins help you contend a little; they do not buy you titles.

Fit on full team-seasons (≥100 games), 1985–2024/25. All figures are franchise-level outcomes credited to the decision-maker in the relevant year — see the GM profiles for per-executive numbers.