Alexander Mattison and Najee Harris have been on opposite sides of 20 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.
Most of those were larger deals with other pieces attached. 1 of them were straight up: Alexander Mattison for Najee Harris, nothing else changing hands.
This is the part a calculator cannot tell you. In 4 of these deals exactly one side had to attach something extra, and 4 of those 4 times it was the Alexander Mattison side (0 the other way). The side that keeps having to add is the side holding the lesser asset, so the market has been treating Najee Harris 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 Alexander Mattison prices at 2 and Najee Harris at 12, so the market currently rates Najee Harris about 6.0x 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 Alexander Mattison | Went with Najee Harris |
|---|---|---|---|
| 2024-09-20 | -119% | Sam Darnold, 1 2nd | Alex Anzalone, Trey Palmer |
| 2023-10-17 | -50% | — | — |
| 2023-09-04 | -51% | Mike Evans | Adam Thielen |
| 2023-08-24 | -118% | Ezekiel Elliott, Mike Gesicki, Albert Okwuegbunam, 1 more | Josh Whyle, Aidan O'Connell, Zach Ertz, 6 more, 1 3rd, 1 later pick |
| 2023-08-20 | -9% | Mike Evans, Jalen Hurts, DeWayne McBride | Justin Herbert, Jaylen Warren, Jalin Hyatt |
| 2023-07-24 | -96% | 2 2nds | — |
| 2023-06-16 | -96% | Jamaal Williams, 1 2nd | — |
| 2023-06-07 | -1% | Russell Gage, Trevor Lawrence, Isiah Pacheco, 1 3rd, 1 later pick | Kyler Murray, Rondale Moore, Jelani Woods, 1 2nd |
| 2023-05-18 | -133% | Sam Howell | 1 2nd |
| 2023-05-17 | +6% | Chris Godwin, Gabe Davis | 1 3rd |
Read each row as: Alexander Mattison, plus anything in the third column, was traded for Najee Harris 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 Alexander Mattison; positive means that side came out ahead.
Across all 20, the whole-deal value gap runs -27.3% from the side that received Alexander Mattison, so the side ending up with Najee Harris 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 Alexander Mattison for Najee Harris 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 20 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 Alexander Mattison trade · Every Najee Harris trade
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