Jeff Greenberg
★ activeGeneral manager for the Tigers (2024–present).
3 seasons with salary-era data across 1 stint. All figures are franchise-level outcomes during the tenure, not solely attributable to one executive.
General manager for the Tigers (2024–present).
3 seasons with salary-era data across 1 stint. All figures are franchise-level outcomes during the tenure, not solely attributable to one executive.
| Team | Role | Years | Szns | WAB | WAB/yr | TAB | WAR surp | HG | Trade | FA | R5 | AcqLev | W-L% | PO | Pen | WS | Surp $M |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
▸  Tigers |
GM | 2024–present | 3 | +12.5 | +4.18 | +10.5 | +5.4 | +24.2 | -0.9 | +5.1 | -2.4 | 3.50 | 0.521 | 2 | – | – | +0 |
| Career total (1985+ data) | 3 | +12.5 | +10.5 | +5.4 | +24.2 | -0.9 | +5.1 | -2.4 | 3.50 | 0.521 | 2 | – | – | +0 | |||
Acquired minus surrendered / signed minus walked.
Every roster slot ranked best→worst by WAR, averaged across Jeff Greenberg's seasons. Bars = his rosters; the black line = the league-average player at each slot. Staying above the line deep into the roster is the depth edge.
| Player | Pos | Team | How | Year | Szns | fWAR | WAR/yr | Lev |
|---|---|---|---|---|---|---|---|---|
| Dillon Dingler | C | DET |
Draft | 2024 | 2 | +8.9 | +4.4 | – |
| Jack Flaherty | P | DET |
Trade | 2024 | 3 | +6.4 | +2.1 | 6.9 |
| Colt Keith | 2B/DH | DET |
Draft | 2024 | 3 | +4.1 | +1.4 | – |
| Kevin McGonigle | 3B/SS | DET |
Draft | 2026 | 1 | +4.1 | +4.1 | – |
| Gleyber Torres | 2B | DET |
Free agency | 2024 | 2 | +3.7 | +1.8 | 8.8 |
| Keider Montero | P | DET |
Draft | 2024 | 3 | +2.4 | +0.8 | – |
| Wenceel Pérez | OF | DET |
Draft | 2024 | 2 | +2.3 | +1.2 | – |
| Brant Hurter | P | DET |
Draft | 2024 | 3 | +1.6 | +0.5 | – |
| Framber Valdez | P | DET |
Free agency | 2026 | 1 | +1.2 | +1.2 | 8.4 |
| Jahmai Jones | DH/OF | DET |
Free agency | 2024 | 1 | +1.1 | +1.1 | 3.7 |
| Troy Melton | P | DET |
Draft | 2025 | 2 | +1.0 | +0.5 | – |
| Ty Madden | P | DET |
Draft | 2024 | 2 | +0.6 | +0.3 | – |
| Mark Canha | OF | DET |
Trade | 2024 | 1 | +0.6 | +0.6 | 1.8 |
| Drew Anderson | P | DET |
Free agency | 2024 | 1 | +0.4 | +0.4 | 2.8 |
| Enmanuel De Jesus | P | DET |
Free agency | 2025 | 1 | +0.4 | +0.4 | 2.9 |
| Bligh Madris | 1B/OF | DET |
Trade | 2024 | 1 | +0.3 | +0.3 | 0.9 |
| Dietrich Enns | P | DET |
Trade | 2025 | 1 | +0.2 | +0.2 | 0.5 |
| Buddy Kennedy | 2B/3B | DET |
Trade | 2024 | 1 | +0.2 | +0.2 | 0.5 |
| Carlos Hernández | P | DET |
Trade | 2025 | 1 | +0.2 | +0.2 | 0.6 |
| Brewer Hicklen | OF | DET |
Trade | 2025 | 1 | +0.2 | +0.2 | 0.6 |
| Sean Guenther | P | DET |
Free agency | 2025 | 2 | +0.1 | +0.1 | 1.1 |
| Jackson Jobe | P | DET |
Draft | 2024 | 2 | +0.1 | +0.1 | – |
| Tomás Nido | C | DET |
Free agency | 2024 | 1 | +0.1 | +0.1 | 0.5 |
| Burch Smith | P | DET |
Free agency | 2025 | 1 | +0.1 | +0.1 | 0.5 |
| Matt Gage | P | DET |
Trade | 2025 | 1 | +0.1 | +0.1 | 0.2 |
| Connor Seabold | P | DET |
Trade | 2026 | 1 | +0.1 | +0.1 | 0.4 |
| Tyler Owens | P | DET |
Trade | 2024 | – | -0.0 | – | – |
| Dylan Smith | P | DET |
Draft | 2025 | – | -0.0 | – | – |
| Drew Sommers | P | DET |
Draft | 2025 | 1 | -0.0 | -0.0 | – |
| José Urquidy | P | DET |
Free agency | 2025 | – | -0.0 | – | – |
| Charlie Morton | P | DET |
Trade | 2025 | 1 | +0.0 | +0.0 | 0.1 |
| Rafael Montero | P | DET |
Trade | 2025 | 1 | +0.0 | +0.0 | 0.0 |
| Kenley Jansen | P | DET |
Free agency | 2025 | – | -0.1 | – | – |
| Chase Lee | P | DET |
Trade | 2024 | – | -0.1 | – | – |
| Manuel Margot | OF | DET |
Free agency | 2025 | – | -0.1 | – | – |
| Kenta Maeda | P | DET |
Trade | 2024 | 1 | -0.1 | -0.1 | 0.1 |
| Kyle Finnegan | P | DET |
Trade | 2025 | 1 | -0.2 | -0.2 | 2.3 |
| Tommy Kahnle | P | DET |
Free agency | 2025 | – | -0.2 | – | – |
| Ricky Vanasco | P | DET |
Trade | 2024 | 1 | -0.2 | -0.2 | 0.1 |
| Jace Jung | 3B | DET |
Draft | 2024 | 1 | -0.3 | -0.3 | – |
| Bryan Sammons | P | DET |
Draft | 2024 | – | -0.4 | – | – |
| Trey Sweeney | SS | DET |
Trade | 2024 | 1 | -0.5 | -0.5 | – |
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.