Rosternomics

Trade Calculator

Build any hypothetical MLB trade — drop in players from any roster, add cash, and get each side's expected surplus and WAR from the Bayesian model that grades every real trade since 1985.

Trade Calculator →

Or look up a real one: MIL won the biggest deal of 2026 by +$12M →

Rate the deals — who overpaid?

vote them all →

The model grades who won each 2026 deal. Now you weigh in. One verdict per fan, final once cast.

Feb 9, 2026
MIL gets
  • Kyle Harrison
  • Shane Drohan
  • David Hamilton
BOS gets
  • Caleb Durbin
  • Anthony Seigler
  • Andruw Monasterio
Fan verdict — who overpaid?
Aug 2, 2026
LAD gets
  • Tarik Skubal
DET gets
  • Zyhir Hope
  • River Ryan
  • Brady Smith
Fan verdict — who overpaid?
Sep 1, 2026
TOR gets
  • José Rodríguez
LAD gets
  • Sebastian Rodriguez
Fan verdict — who overpaid?
Aug 3, 2026
TOR gets
  • José Soriano
ANA gets
  • Arjun Nimmala
  • Angel Rivero
  • Eddie Micheletti Jr.
Fan verdict — who overpaid?
Aug 31, 2026
PHI gets
  • cash/PTBNL
CHW gets
  • Tommy Pham
Fan verdict — who overpaid?
Jan 22, 2026
TEX gets
  • MacKenzie Gore
WSN gets
  • Devin Fitz-Gerald
  • Alejandro Rosario
  • Gavin Fien
  • Abimelec Ortiz
  • Yeremy Cabrera
Fan verdict — who overpaid?
Aug 31, 2026
TBR gets
  • cash/PTBNL
CHW gets
  • Jake Cave
Fan verdict — who overpaid?
Aug 3, 2026
BOS gets
  • Adley Rutschman
  • Jake Rogers
BAL gets
  • Anthony Eyanson
  • Carlos Narváez
  • Kyson Witherspoon
  • Enddy Azocar
Fan verdict — who overpaid?
Aug 3, 2026
TBR gets
  • Liam Hicks
MIA gets
  • Brayden Taylor
  • Adrian Santana
  • Jacob Kisting
Fan verdict — who overpaid?
Jan 13, 2026
NYY gets
  • Ryan Weathers
MIA gets
  • Brendan Jones
  • Juan Matheus
  • Dillon Lewis
  • Dylan Jasso
Fan verdict — who overpaid?
Jan 21, 2026
NYM gets
  • Tobias Myers
  • Freddy Peralta
MIL gets
  • Jett Williams
  • Brandon Sproat
Fan verdict — who overpaid?
May 9, 2026
CLE gets
  • Patrick Bailey
SFG gets
  • Draft pick (#29)
  • Matt Wilkinson
Fan verdict — who overpaid?

Active GM WAR leaders

Wins/season above a replacement GM — an average front office on the same budget — org-adjusted & shrunk. How it's built →

ExecutiveTeamsYrsGM WARTitles
1 Andrew Friedman LAD TBR 21 +9.3 3
2 Erik Neander TBR 10 +9.1 0
3 Brandon Gomes LAD 5 +5.9 2
4 Mike Chernoff CLE 11 +5.9 0
5 Matt Arnold MIL 6 +4.9 0
6 Chris Antonetti CLE 16 +4.2 0

Full active leaderboard → · all-time →

The league, every season

All 30 front offices in one view — who runs each team, total payroll, the year-over-year spend change, competitive regime, record & postseason — for any year since 1985. Leading 2026 so far:

TeamHead of baseball opsRegimeRecordPayrollΔ Pay
1 Brewers Matt Arnold WINDOW 85–53 $119M +10M
2 Rays Erik Neander WINDOW 82–55 $78M +17M
3 Dodgers Andrew Friedman CONTEND 82–55 $360M +28M
4 Braves Alex Anthopoulos FORCED-SPEND 82–56 $228M +39M
5 Cubs Jed Hoyer CONTEND 78–60 $225M +23M
6 Yankees Brian Cashman CONTEND 78–60 $271M +26M

Open the full league view →

Graphs

Every team's competitive story, traced from the data.

All graphs →

All-time leaders — GM WAR

Career org-adjusted skill — the headline number, over a full tenure. How it's built →

ExecutiveTeamsSeasonsGM WARTitles
1 Andrew Friedman LAD TBR 21 +9.3 3
2 Erik Neander TBR 10 +9.1 0
3 Pat Gillick BAL PHI SEA TOR 20 +7.0 3
4 John Schuerholz ATL KCR 23 +6.5 2
5 Brandon Gomes LAD 5 +5.9 2
6 Jeff Luhnow HOU 9 +5.9 1

See the full GM leaderboard →

All-time leaders — Scouting Directors (DVOS)

Draft Value Over Slot: career fWAR each pick produced above what its draft slot historically returns. Hit DVOS (drafting position players above slot) is the reliable position skill.

Scouting DirectorTeamsDraftsDVOSHit DVOS
1 Roy Clark ATL 10 +193.4 +204.7
2 Mike Arbuckle PHI 8 +147.5 +187.7
3 Brian Sabean NYY SFG 6 +132.9 +107.5
4 Logan White LAD 7 +130.3 +118.8
5 John Barr BAL NYM SFG 11 +128.0 +142.8
6 Eddie Bane ANA 7 +123.5 +125.7

See the full scouting-director leaderboard →

Biggest Draft Steals of All Time

The 10 picks whose career WAR most exceeded what their draft slot × position × age cohort historically produces. Settled cohorts only (drafts ≤ 2018). The patron saint is Mike Trout — #25 overall in 2009.

PlayerYearPickTeamPosSchoolCareer WARDVOS
1 Albert Pujols 1999 #402 STL IF HS 88 +87
2 Barry Bonds 1985 #6 PIT OF COLL 110 +87
3 Jeff Bagwell 1989 #109 BOS IF COLL 80 +78
4 Mike Trout 2009 #25 ANA OF HS 85 +77
5 Mike Mussina 1990 #20 BAL P COLL 70 +64
6 Randy Johnson 1985 #36 WSN P COLL 66 +63
7 Mookie Betts 2011 #172 BOS IF HS 63 +62
8 Clayton Kershaw 2006 #7 LAD P HS 71 +61
9 Mike Piazza 1988 #1390 LAD C COLL 59 +59
10 Aaron Judge 2013 #32 NYY OF COLL 64 +59

See the full draft database →

Metrics

Every number on the site, built in the open — the model, the formula, and a worked example for each.

GM WAR — wins above a replacement GM The headline front-office metric: how many wins a general manager adds per season above an average front office on the same budget, with the franchise he inherited and the luck of a short sample stripped out. WAB — Wins Above Budget How many games a team won above what its payroll predicted — a resource-controlled, era-neutral scorecard for front-office performance. TAB — Talent Above Budget How much roster talent a team assembled above what its payroll predicted — the roster-construction half of front-office skill. RFA — Roster Foundation Added How much durable, controlled production a Future-oriented trade added to the roster foundation needed to become competitive. PPA — Playoff Points Added Playoff probability points added per acquired WAR. Each acquisition is graded once, at the deal — did the GM buy wins where they actually move the needle? CPA — Championship Points Added World Series probability points added per acquired WAR. Same acquisition stack as PPA, but measured on the championship curve. Acquisition Reliance How much of a team's contention is carried by acquired (FA/trade) talent rather than home-grown — counted every season that talent stays on the roster. Surplus $M — Dollar Value Above Cost The market dollar value of a player's production minus what he was actually paid — how much free money a front office extracted from its roster. 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. DVOS — Draft Value Over Slot The scouting-director analog of WAB: how much fWAR a director's picks produced above what their draft slots historically return. Plus the surprising structure of where draft skill is — and isn't — real. Grading Trades — and why nobody can pick winners Our trade grades are calibrated and unbiased — and they still can't tell you who will win a trade, because trades are an efficient market and ~92% of the outcome is unforeseeable at the time. Model Versions — what changed, and when A running changelog for the trade-grading model. We'd rather show our work than silently move the numbers.