Justin Herbert and Lamar Jackson have been on opposite sides of 60 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 15 of these deals exactly one side had to attach something extra, and 10 of those 15 times it was the Justin Herbert side (5 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 Herbert prices at 3,160 and Lamar Jackson at 4,824, so the market currently rates Lamar Jackson about 1.5x 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 2026-07-24.
| Date | Margin | Went with Justin Herbert | Went with Lamar Jackson |
|---|---|---|---|
| 2026-07-20 | +8% | Drew Allar, Breece Hall | Travis Etienne |
| 2026-06-26 | -23% | Malik Nabers, 3 1sts | Christian McCaffrey, George Pickens, Puka Nacua |
| 2026-05-07 | -19% | Geno Smith, Dontayvion Wicks, Jalen McMillan, 12 more | Jayden Reed, Jalen Tolbert, Nico Collins, 10 more |
| 2026-04-16 | +22% | Woody Marks, Kaleb Johnson, 1 1st, 1 3rd | Davante Adams, D'Andre Swift |
| 2025-09-23 | -4% | 1 1st, 1 3rd | 1 2nd |
| 2025-06-01 | +15% | 2 1sts | Michael Pittman |
| 2025-02-23 | +10% | Jaylen Warren, Rashid Shaheed, Quentin Johnston, 1 1st, 1 2nd, 3 3rds | Joe Mixon, Zay Flowers |
| 2024-10-20 | -63% | Isaiah Likely, Rashid Shaheed, 1 1st, 1 2nd, 1 3rd, 2 later picks | Geno Smith, Joe Burrow |
| 2024-09-11 | -2% | Cole Kmet, Chris Olave, Keaton Mitchell, 1 1st, 2 2nds, 2 3rds, 1 later pick | Kirk Cousins, Adam Thielen, Tyler Huntley, 2 more, 1 later pick |
| 2024-07-27 | -8% | Tank Dell, 1 2nd | David Montgomery, 1 3rd |
Read each row as: Justin Herbert, 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 Herbert; positive means that side came out ahead.
Across all 60, the whole-deal value gap runs +1.1% from the side that received Justin Herbert - close to even. Read that as a measure of the entire trade, every piece included, not of these two players against each other.
A calculator answers “is Justin Herbert 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 60 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 Herbert trade · Every Lamar Jackson trade
All players with real trade data →