Craig Breslow
★ activeBorn Aug 8, 1980 · New Haven, CT · age 46
A former MLB pitcher and Yale graduate turned Boston Red Sox chief baseball officer, hired to modernize the club's pitching development and analytics.
Across the full 3-season sample, the measured profile stands out most for roster depth (90th percentile), cheap-talent surplus (86th percentile), and payroll-adjusted roster quality (80th percentile). The clearest contrast is cost per win (19th percentile): the measured clubs have paid more per unit of positive WAR than most peers. Because the sample covers fewer than five seasons, those comparisons are descriptive rather than stable.
3 seasons with salary-era data across 1 stint. All figures are franchise-level outcomes during the tenure, not solely attributable to one executive.
0 pennants · 1 playoff appearance · 254–225 (0.530)
Overview
to
| Team | Role | Year | Pay $M |
Rel Pay |
Surp $M |
Surp WAR |
Dead % |
Cheap $M |
Draft $M |
Trd $M |
Int'l $M |
$ / WAR |
WAR | Depth | Dead WAR |
HG | Trade | Net/ Trd |
FA | R5 | RFA | PPA | CPA | WAB | TAB | W-L% | PO | Pen | WS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Red Sox |
POBO/GM | 2024 81–81 | $147 | 91 | +6 | +1.4 | 18% | +63 | +47 | +1 | +0 | $3.4M | 36.7 | 6.0 | -6.1 | +2.6 | +0.3 | +0.03 | -0.9 | -0.1 | +0.12 | 4.60 | 0.30 | +0.2 | +3.6 | 0.500 | |||
| Red Sox |
POBO/GM | 2025 89–73 | $178 | 113 | +2 | +0.4 | 37% | +46 | +7 | +36 | +0 | $3.6M | 44.3 | 11.0 | -5.3 | +10.1 | -1.3 | -0.14 | -5.8 | -0.2 | +0.48 | 3.90 | 0.34 | +5.5 | +8.6 | 0.549 | ✓ | ||
| Red Sox |
POBO/GM | 2026 84–71 | $184 | 113 | -4 | -0.8 | 50% | +4 | -6 | -28 | +0 | $4.2M | 42.0 | 8.0 | -1.9 | -0.0 | +0.8 | +0.41 | +5.4 | +0.0 | +0.09 | 1.22 | 0.12 | +4.1 | +8.2 | 0.542 | |||
| Career total (1985+ data) | $509 | 106 | +4 | +0.9 | 35% | +38 | +16 | +3 | +0 | $3.7M | 123.0 | 8.3 | -4.4 | +12.7 | -0.2 | -0.01 | -1.3 | -0.4 | +0.24 | 2.81 | 0.24 | +9.8 | +20.4 | 0.530 | 1 | – | – | ||
Roster Construction
Build channels — net fWAR
Acquired minus surrendered / signed minus walked.
Home-grown (draft/intl)+12.7
Trade-0.2
Free agency-1.3
Rule 5 / minor draft-0.4
Sourcing mix: 28% draft · 37% FA · 34% trade · 0% R5
Trades
Trades made — 59 deals credited to Craig Breslow, best expected value first; surplus is realized value in $M
2024 · BOS / CHW
Dec 11, 2024
BOS · Craig Breslow
+$7.2M
Garrett Crochet
CHW · Chris Getz
−$7.2M
Wikelman González, Chase Meidroth, Braden Montgomery#60.5, Kyle Teel
Too soon to call
unsettled
2025 · BOS / SFG
Jun 15, 2025
BOS · Craig Breslow
+$6.4M
Kyle Harrison, James Tibbs III, Jose Bello, Jordan Hicks
SFG · Buster Posey
−$6.4M
Rafael Devers
Too soon to call
unsettled
2025 · MIL / BOS
Apr 7, 2025
MIL · Matt Arnold
+$20.8M
Quinn Priester
BOS · Craig Breslow
−$20.8M
Yophery Rodriguez, Draft pick (≈#70)
Too soon to call
unsettled
2025 · BOS / STL
Nov 25, 2025
BOS · Craig Breslow
+$39.2M
Sonny Gray
STL · John Mozeliak
−$39.2M
Richard Fitts, Brandon Clarke
Too soon to call
unsettled
2024 · BOS / MIN
Dec 24, 2024
BOS · Craig Breslow
+$4.0M
Jovani Morán
MIN · Derek Falvey
−$4.0M
Mickey Gasper
Too soon to call
unsettled
2025 · BOS / PIT
Dec 4, 2025
BOS · Craig Breslow
+$2.4M
Tyler Samaniego, Johan Oviedo, Adonys Guzman
PIT · Ben Cherington
−$2.4M
Jhostynxon Garcia, Jesus Travieso
Too soon to call
unsettled
2024 · PIT / BOS
Dec 15, 2024
PIT · Ben Cherington
+$0.0M
Enmanuel Valdez
BOS · Craig Breslow
+$0.0M
Joe Vogatsky
Too soon to call
unsettled
2026 · BOS / CHW
Feb 1, 2026
BOS · Craig Breslow
+$6.4M
Gage Ziehl
CHW · Chris Getz
−$6.4M
Jordan Hicks, David Sandlin
Too soon to call
unsettled
2026 · BOS / DET
Jul 14, 2026
BOS · Craig Breslow
+$4.8M
Jahmai Jones
DET · Scott Harris
−$4.8M
cash / PTBNL
Too soon to call
unsettled
2026 · BOS / MIN
Jan 21, 2026
BOS · Craig Breslow
+$2.4M
Nate Baez
MIN · Derek Falvey
−$2.4M
Tristan Gray
Too soon to call
unsettled
2025 · BOS / ANA
May 22, 2025
BOS · Craig Breslow
+$0.0M
Ryan Noda
ANA · Perry Minasian
+$0.0M
cash / PTBNL
Too soon to call
unsettled
2024 · BOS / ATL
May 9, 2024
BOS · Craig Breslow
+$0.8M
cash / PTBNL
ATL · Alex Anthopoulos
−$0.8M
Zack Short
Too soon to call
unsettled
2024 · BOS / CHW
Dec 21, 2024
BOS · Craig Breslow
+$4.0M
Yhoiker Fajardo
CHW · Chris Getz
−$4.0M
Cam Booser
Too soon to call
unsettled
2024 · BOS / NYM
Feb 2, 2024
BOS · Craig Breslow
+$0.0M
Tyler Heineman
NYM · David Stearns
+$0.0M
cash / PTBNL
Too soon to call
unsettled
2026 · BOS / OAK
Jul 1, 2026
BOS · Craig Breslow
+$0.0M
Brett Harris
OAK · David Forst
+$0.0M
Ben Hansen
Too soon to call
unsettled
2025 · BOS / LAD
Mar 27, 2025
BOS · Craig Breslow
+$2.4M
cash / PTBNL
LAD · Andrew Friedman
−$2.4M
Noah Davis
Too soon to call
unsettled
2025 · BOS / MIL
May 5, 2025
BOS · Craig Breslow
+$0.0M
John Holobetz
MIL · Matt Arnold
+$0.0M
cash / PTBNL
Too soon to call
unsettled
2024 · CHC / BOS
Apr 27, 2024
CHC · Jed Hoyer
+$3.2M
cash / PTBNL
BOS · Craig Breslow
−$3.2M
Garrett Cooper
Too soon to call
unsettled
2025 · BOS / LAD
Jun 20, 2025
BOS · Craig Breslow
+$0.0M
cash / PTBNL
LAD · Andrew Friedman
+$0.0M
Zach Penrod
Too soon to call
unsettled
2024 · LAD / BOS
Jul 26, 2024
LAD · Andrew Friedman
+$4.0M
Moises Bolivar
BOS · Craig Breslow
−$4.0M
James Paxton
Too soon to call
unsettled
2024 · BOS / NYM
Sep 8, 2024
BOS · Craig Breslow
+$0.0M
cash / PTBNL
NYM · David Stearns
+$0.0M
Eddy Alvarez
Too soon to call
unsettled
2024 · CHW / BOS
Apr 30, 2024
CHW · Chris Getz
+$2.4M
cash / PTBNL
BOS · Craig Breslow
−$2.4M
Bailey Horn
Too soon to call
unsettled
2025 · COL / BOS
Nov 18, 2025
COL · Bill Schmidt
+$4.8M
Brennan Bernardino
BOS · Craig Breslow
−$4.8M
Braiden Ward
Too soon to call
unsettled
2025 · BOS / CIN
Jun 14, 2025
BOS · Craig Breslow
+$0.0M
cash / PTBNL
CIN · Nick Krall
+$0.0M
Brian Van Belle
Too soon to call
unsettled
2025 · OAK / BOS
Dec 10, 2025
OAK · David Forst
+$0.8M
Justin Riemer
BOS · Craig Breslow
−$0.8M
Ryan Watson
Too soon to call
unsettled
2026 · PIT / BOS
Jun 4, 2026
PIT · Ben Cherington
+$0.8M
cash / PTBNL
BOS · Craig Breslow
−$0.8M
Joe La Sorsa
Too soon to call
unsettled
2025 · OAK / BOS
May 27, 2025
OAK · David Forst
+$5.6M
Sean Newcomb
BOS · Craig Breslow
−$5.6M
cash / PTBNL
Too soon to call
unsettled
2025 · SEA / BOS
Nov 18, 2025
SEA · Jerry Dipoto
+$0.8M
Alex Hoppe
BOS · Craig Breslow
−$0.8M
Luke Heyman
Too soon to call
unsettled
2025 · ANA / BOS
Dec 9, 2025
ANA · Perry Minasian
+$0.0M
Vaughn Grissom
BOS · Craig Breslow
+$0.0M
Isaiah Jackson
Too soon to call
unsettled
2025 · CHW / BOS
Nov 18, 2025
CHW · Chris Getz
+$0.0M
Chris Murphy
BOS · Craig Breslow
+$0.0M
Ronny Hernandez
Too soon to call
unsettled
2025 · BOS / WSN
Dec 15, 2025
BOS · Craig Breslow
+$0.0M
Jake Bennett
WSN · Mike DeBartolo
+$0.0M
Luis Perales
Too soon to call
unsettled
2024 · DET / BOS
Jul 6, 2024
DET · Scott Harris
+$1.6M
cash / PTBNL
BOS · Craig Breslow
−$1.6M
Trey Wingenter
Too soon to call
unsettled
2024 · TOR / BOS
Jul 27, 2024
TOR · Ross Atkins
+$3.2M
Eddinson Paulino, Cutter Coffey, Gilberto Batista
BOS · Craig Breslow
−$3.2M
Danny Jansen
Too soon to call
unsettled
2024 · BOS / MIL
Apr 18, 2024
BOS · Craig Breslow
+$0.0M
Vladimir Gutiérrez
MIL · Matt Arnold
+$0.0M
cash / PTBNL
Too soon to call
unsettled
2024 · CIN / BOS
Jul 30, 2024
CIN · Nick Krall
+$3.2M
Ovis Portes
BOS · Craig Breslow
−$3.2M
Lucas Sims
Too soon to call
unsettled
2024 · BOS / NYY
Dec 11, 2024
BOS · Craig Breslow
+$8.0M
Carlos Narváez
NYY · Brian Cashman
−$8.0M
Elmer Rodriguez
Too soon to call
unsettled
2026 · BOS / DET
Aug 1, 2026
BOS · Craig Breslow
+$0.0M
cash / PTBNL
DET · Scott Harris
+$0.0M
Jojo Ingrassia
Too soon to call
unsettled
2026 · BOS / STL
Apr 5, 2026
BOS · Craig Breslow
+$0.0M
cash / PTBNL
STL · Chaim Bloom
+$0.0M
Patrick Galle
Too soon to call
unsettled
2024 · BOS / TBR
Mar 27, 2024
BOS · Craig Breslow
+$0.0M
Naoyuki Uwasawa
TBR · Erik Neander
+$0.0M
cash / PTBNL
Too soon to call
unsettled
2024 · SFG / BOS
Mar 27, 2024
SFG · Farhan Zaidi
+$3.2M
Christian Koss
BOS · Craig Breslow
−$3.2M
cash / PTBNL
Too soon to call
unsettled
2024 · KCR / BOS
Feb 17, 2024
KCR · J.J. Picollo
+$4.8M
John Schreiber
BOS · Craig Breslow
−$4.8M
David Sandlin
Too soon to call
unsettled
2026 · MIL / BOS
Feb 9, 2026
MIL · Matt Arnold
+$15.2M
Shane Drohan, David Hamilton, Kyle Harrison
BOS · Craig Breslow
−$15.2M
Caleb Durbin, Anthony Seigler, Andruw Monasterio
Too soon to call
unsettled
2025 · MIN / BOS
Jun 11, 2025
MIN · Derek Falvey
+$0.8M
Andy Lugo
BOS · Craig Breslow
−$0.8M
Jorge Alcalá
Too soon to call
unsettled
2024 · BOS / DET
Jul 8, 2024
BOS · Craig Breslow
+$0.0M
cash / PTBNL
DET · Scott Harris
+$0.0M
CJ Weins
Too soon to call
unsettled
2024 · BOS / NYM
May 25, 2024
BOS · Craig Breslow
+$0.0M
cash / PTBNL
NYM · David Stearns
+$0.0M
Pablo Reyes
Too soon to call
unsettled
2025 · BOS / NYM
Aug 31, 2025
BOS · Craig Breslow
+$0.0M
Ali Sánchez
NYM · David Stearns
+$0.0M
cash / PTBNL
Too soon to call
unsettled
2025 · BOS / CHW
Jul 12, 2025
BOS · Craig Breslow
+$0.0M
cash / PTBNL
CHW · Chris Getz
+$0.0M
Blake Sabol
Too soon to call
unsettled
2024 · NYM / BOS
May 1, 2024
NYM · David Stearns
+$0.8M
cash / PTBNL
BOS · Craig Breslow
−$0.8M
Zack Short
Too soon to call
unsettled
2026 · BOS / SFG
Aug 3, 2026
BOS · Craig Breslow
+$1.6M
Carlos Gutierrez, Erik Miller
SFG · Buster Posey
−$1.6M
Marcelo Mayer
Too soon to call
unsettled
2025 · BOS / TBR
Nov 18, 2025
BOS · Craig Breslow
+$0.0M
Tristan Gray
TBR · Erik Neander
+$0.0M
Luis Guerrero
Too soon to call
unsettled
2025 · STL / BOS
Jul 31, 2025
STL · John Mozeliak
+$8.8M
Blaze Jordan
BOS · Craig Breslow
−$8.8M
Steven Matz
Too soon to call
unsettled
2026 · BOS / ATL
Aug 3, 2026
BOS · Craig Breslow
+$0.8M
Eli White
ATL · Alex Anthopoulos
−$0.8M
Tyler Uberstine
Too soon to call
unsettled
2026 · BOS / BAL
Aug 12, 2026
BOS · Craig Breslow
+$0.0M
cash / PTBNL
BAL · Mike Elias
+$0.0M
Harold Rivas
Too soon to call
unsettled
2024 · BOS / PIT
Jul 29, 2024
BOS · Craig Breslow
+$2.4M
Quinn Priester
PIT · Ben Cherington
−$2.4M
Nick Yorke
Too soon to call
unsettled
2024 · BOS / ANA
Jul 30, 2024
BOS · Craig Breslow
+$0.8M
Luis García
ANA · Perry Minasian
−$0.8M
Yeferson Vargas, Niko Kavadas, Matthew Lugo, Ryan Zeferjahn
Too soon to call
unsettled
2025 · LAD / BOS
Jul 31, 2025
LAD · Andrew Friedman
+$1.6M
Zach Ehrhard, James Tibbs III
BOS · Craig Breslow
−$1.6M
Dustin May
Too soon to call
unsettled
2025 · BOS / STL
Dec 22, 2025
BOS · Craig Breslow
+$19.2M
Willson Contreras
STL · John Mozeliak
−$19.2M
Blake Aita, Hunter Dobbins, Yhoiker Fajardo
Too soon to call
unsettled
2026 · BOS / WSN
Jul 26, 2026
BOS · Craig Breslow
+$0.0M
Curtis Mead
WSN · Paul Toboni
+$0.0M
Connelly Early
Too soon to call
unsettled
2026 · BOS / BAL
Aug 3, 2026
BOS · Craig Breslow
+$3.2M
Adley Rutschman, Jake Rogers
BAL · Mike Elias
−$3.2M
Kyson Witherspoon, Enddy Azocar, Anthony Eyanson#36.3, Carlos Narváez
Too soon to call
unsettled
Players acquired — 66 players, by realized fWAR for the franchise (scroll for more)
| Player | Pos | Team | How | Year | Szns | fWAR | WAR/yr | RFA | PPA | CPA |
|---|---|---|---|---|---|---|---|---|---|---|
| Garrett Crochet | P | BOS |
Trade | 2024 | 2 | +6.1 | +3.0 | -1.46 | 23.4% | 1.89% |
| Aroldis Chapman | P | BOS |
Free agency | 2024 | 2 | +4.1 | +2.1 | – | 10.2% | 0.91% |
| Willson Contreras | C | BOS |
Trade | 2025 | 1 | +4.1 | +4.1 | -3.09 | 4.7% | 0.50% |
| Payton Tolle | P | BOS |
Draft | 2025 | 1 | +3.8 | +3.8 | – | – | – |
| Ranger Suarez | P | BOS |
Free agency | 2026 | 1 | +3.7 | +3.7 | – | 4.1% | 0.45% |
| Alex Bregman | 3B | BOS |
Free agency | 2025 | 1 | +3.6 | +3.6 | – | 13.9% | 1.23% |
| Roman Anthony | DH/OF | BOS |
Draft | 2025 | 2 | +3.3 | +1.7 | – | – | – |
| Sonny Gray | P | BOS |
Trade | 2026 | 1 | +3.2 | +3.2 | -1.47 | 3.9% | 0.40% |
| Caleb Durbin | 3B | BOS |
Trade | 2026 | 1 | +3.1 | +3.1 | +1.00 | 3.7% | 0.38% |
| Carlos Narváez | C | BOS |
Trade | 2024 | 1 | +2.7 | +2.7 | -0.02 | 10.7% | 0.94% |
| Tyler O'Neill | OF | BOS |
Trade | 2024 | 1 | +2.5 | +2.5 | – | 11.7% | 0.76% |
| Lucas Giolito | P | BOS |
Free agency | 2024 | 1 | +1.9 | +1.9 | – | 7.2% | 0.65% |
| Connelly Early | P | BOS |
Draft | 2025 | 2 | +1.8 | +0.9 | – | – | – |
| Greg Weissert | P | BOS |
Trade | 2024 | 3 | +1.6 | +0.5 | +0.39 | 2.4% | 0.16% |
| Romy Gonzalez | 1B/2B | BOS |
Trade | 2024 | 2 | +1.5 | +0.8 | – | 1.1% | 0.07% |
| Nick Sogard | 2B | BOS |
Draft | 2024 | 2 | +1.4 | +0.7 | – | – | – |
| Patrick Sandoval | P | BOS |
Free agency | 2024 | 1 | +1.1 | +1.1 | – | 1.5% | 0.14% |
| Cooper Criswell | P | BOS |
Trade | 2024 | 1 | +1.1 | +1.1 | – | 5.1% | 0.34% |
| Isiah Kiner-Falefa | SS | BOS |
Free agency | 2026 | 1 | +1.0 | +1.0 | – | 1.4% | 0.13% |
| Justin Wilson | P | BOS |
Free agency | 2024 | 1 | +1.0 | +1.0 | – | 3.8% | 0.35% |
| Hunter Dobbins | P | BOS |
Draft | 2025 | 1 | +0.9 | +0.9 | – | – | – |
| Tayron Guerrero | P | BOS |
Free agency | 2026 | 1 | +0.9 | +0.9 | – | 1.2% | 0.12% |
| Jahmai Jones | DH/OF | BOS |
Trade | 2026 | 1 | +0.8 | +0.8 | +1.17 | 1.1% | 0.11% |
| Sean Newcomb | P | BOS |
Trade | 2025 | 1 | +0.7 | +0.7 | – | 2.6% | 0.25% |
| Mickey Gasper | C/DH | BOS |
Draft | 2024 | 1 | +0.6 | +0.6 | – | – | – |
| Nate Eaton | 3B/OF | BOS |
Free agency | 2024 | 2 | +0.5 | +0.3 | – | 1.3% | 0.12% |
| Nathaniel Lowe | 1B | BOS |
Trade | 2025 | 1 | +0.5 | +0.5 | – | 1.7% | 0.16% |
| Marcelo Mayer | 2B/3B | BOS |
Draft | 2025 | 1 | +0.4 | +0.4 | – | – | – |
| Anthony Seigler | 2B/3B | BOS |
Trade | 2026 | 1 | +0.4 | +0.4 | +1.00 | 0.6% | 0.06% |
| Kyle Harrison | P | BOS |
Trade | 2025 | 1 | +0.4 | +0.4 | -15.12 | 1.3% | 0.13% |
| Cam Booser | P | BOS |
Draft | 2024 | 1 | +0.3 | +0.3 | – | – | – |
| Luis Guerrero | P | BOS |
Draft | 2024 | 1 | +0.3 | +0.3 | – | – | – |
| Adley Rutschman | C | BOS |
Trade | 2026 | 1 | +0.3 | +0.3 | -7.32 | 0.4% | 0.04% |
| Erik Miller | P | BOS |
Trade | 2026 | 1 | +0.3 | +0.3 | -0.60 | 0.4% | 0.04% |
| Tyler Samaniego | P | BOS |
Trade | 2025 | 1 | +0.2 | +0.2 | +0.77 | – | – |
| Jake Rogers | C | BOS |
Trade | 2026 | 1 | +0.2 | +0.2 | -7.32 | 0.3% | 0.02% |
| Nick Burdi | P | BOS |
Free agency | 2025 | 1 | +0.1 | +0.1 | – | 0.3% | 0.03% |
| Jovani Morán | P | BOS |
Trade | 2024 | 2 | +0.1 | +0.1 | +0.16 | 0.1% | 0.01% |
| Eduardo Rivera | P | BOS |
Draft | 2026 | 1 | +0.1 | +0.1 | – | – | – |
| Chase Shugart | P | BOS |
Draft | 2024 | 1 | +0.1 | +0.1 | – | – | – |
| Naoyuki Uwasawa | P | BOS |
Trade | 2024 | 1 | +0.1 | +0.1 | – | – | – |
| José De León | P | BOS |
Trade | 2025 | 1 | +0.1 | +0.1 | – | 0.4% | 0.04% |
| Eli White | OF | BOS |
Trade | 2026 | 1 | +0.1 | +0.1 | -1.09 | 0.1% | 0.01% |
| Quinn Priester | P | BOS |
Trade | 2024 | 1 | +0.1 | +0.1 | – | 0.5% | 0.04% |
| Raymond Burgos | P | BOS |
Free agency | 2026 | 1 | +0.0 | +0.0 | – | 0.0% | 0.00% |
| Jhostynxon Garcia | OF | BOS |
Draft | 2025 | 1 | +0.0 | +0.0 | – | – | – |
| Liam Hendriks | P | BOS |
Free agency | 2024 | – | -0.0 | – | – | – | – |
| Seth Martinez | P | BOS |
Free agency | 2026 | – | -0.0 | – | – | – | – |
| Zach Penrod | P | BOS |
Draft | 2024 | – | -0.0 | – | – | – | – |
| Dominic Smith | 1B/OF | BOS |
Free agency | 2024 | 1 | -0.0 | -0.0 | – | 1.6% | 0.10% |
| Tyler Heineman | C | BOS |
Trade | 2024 | 1 | +0.0 | +0.0 | +0.07 | 0.1% | 0.01% |
| Danny Jansen | C | BOS |
Trade | 2024 | 1 | +0.0 | +0.0 | – | 0.1% | 0.00% |
| Ryan Watson | P | BOS |
Trade | 2026 | 1 | +0.0 | +0.0 | -0.01 | 0.0% | 0.00% |
| Curtis Mead | 1B/3B | BOS |
Trade | 2026 | 1 | +0.0 | +0.0 | -1.16 | 0.0% | 0.00% |
| Tsung-Che Cheng | SS | BOS |
Trade | 2026 | 1 | +0.0 | +0.0 | – | 0.1% | 0.01% |
| Danny Coulombe | P | BOS |
Free agency | 2026 | – | -0.1 | – | – | – | – |
| Tommy Kahnle | P | BOS |
Free agency | 2026 | – | -0.1 | – | – | – | – |
| Johan Oviedo | P | BOS |
Trade | 2025 | – | -0.1 | – | +0.77 | – | – |
| Robert Stock | P | BOS |
Free agency | 2025 | 1 | -0.1 | -0.1 | – | 0.3% | 0.04% |
| Tyler Uberstine | P | BOS |
Draft | 2026 | – | -0.1 | – | – | – | – |
| Jamie Westbrook | 2B | BOS |
Rule 5 | 2024 | – | -0.1 | – | – | – | – |
| Kristian Campbell | 2B | BOS |
Draft | 2025 | – | -0.2 | – | – | – | – |
| Isaiah Campbell | P | BOS |
Free agency | 2024 | – | -0.4 | – | – | – | – |
| Bailey Horn | P | BOS |
Trade | 2024 | – | -0.5 | – | +0.13 | – | – |
| Andruw Monasterio | 2B/3B/SS | BOS |
Trade | 2026 | – | -0.5 | – | +1.00 | – | – |
| Abraham Toro | 2B/3B | BOS |
Free agency | 2025 | – | -0.6 | – | – | – | – |
Trade-side columns: RFA is playoff-readiness percentage points added to the future roster foundation. It grades the franchise's entire side of a trade, so the same score repeats for every player acquired in that package. PPA/CPA remain player-level arrival-year probability points.
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.
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