Justin Fields and Lamar Jackson have been on opposite sides of 41 real dynasty trades.
Not simulations and not a calculator lining up two numbers. Every one of them is a completed trade from a public Sleeper league, graded at the player values that were current on the day it happened.
None of them were a straight one-for-one. Every time these two crossed, something else was attached to close it.
This is the part a calculator cannot tell you. In 11 of these deals exactly one side had to attach something extra, and 10 of those 11 times it was the Justin Fields side (1 the other way). The side that keeps having to add is the side holding the lesser asset, so the market has been treating Lamar Jackson as the more valuable of the two.
Everything above is priced on the day each deal happened, which is the only honest way to grade a completed trade. It is not what they cost now. Today Justin Fields prices at 21 and Lamar Jackson at 4,824, so the market currently rates Lamar Jackson about 229.7x the other. A pair can lean one way across its history and price the opposite way now; that gap is the whole reason to check the deal in front of you rather than the deal someone made in 2023.
Values as of 2026-09-04.
| Date | Margin | Went with Justin Fields | Went with Lamar Jackson |
|---|---|---|---|
| 2025-09-06 | +20% | Evan Engram, Ja'Marr Chase, Garrett Wilson, 1 more | Ricky Pearsall, Jaydon Blue, Tory Horton, 1 more, 2 3rds, 2 later picks |
| 2025-06-13 | -23% | Michael Penix, Rome Odunze | — |
| 2025-05-28 | -98% | 1 1st | Tony Pollard |
| 2025-04-28 | -70% | 1 1st, 1 2nd, 1 3rd | 1 later pick |
| 2024-08-17 | +8% | Garrett Wilson, 1 1st | 1 3rd |
| 2024-07-23 | -43% | Will Shipley, Troy Franklin, Trevor Lawrence | Spencer Rattler, Brandin Cooks, Diontae Johnson |
| 2024-07-12 | -26% | 1 1st, 1 2nd | — |
| 2024-05-23 | +9% | Evan Engram, Bijan Robinson | — |
| 2024-02-14 | +28% | 2 1sts | — |
| 2024-01-15 | -5% | Jahan Dotson, Josh Downs, 1 1st | Calvin Ridley, 1 3rd |
Read each row as: Justin Fields, plus anything in the third column, was traded for Lamar Jackson plus anything in the fourth. An em dash means that side sent nobody else. Margin is the value gap at that day’s prices from the side that received Justin Fields; positive means that side came out ahead.
Across all 41, the whole-deal value gap runs -9.4% from the side that received Justin Fields, so the side ending up with Lamar Jackson has generally come out ahead on face value. That measures the entire trade, every piece included, not these two players against each other.
A calculator answers “is Justin Fields for Lamar Jackson fair” by subtracting one number from another, and it gives every manager in your league the same answer. That tells you nothing about whether the trade closes. What closes it is whether one side has to attach a piece, and which side that usually is. The 41 deals above are the record of what leagues actually agreed to when these two were on the table together.
How trade fairness actually works →
Every Justin Fields trade · Every Lamar Jackson trade
All players with real trade data →