Dak Prescott and J.J. McCarthy have been on opposite sides of 23 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: Dak Prescott for J.J. McCarthy, nothing else changing hands.
In 1 of these deals exactly one side had to attach something extra, split 1 to 0 between the Dak Prescott side and the J.J. McCarthy side. That is too close, and too small a sample, to call either player the more valuable.
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 Dak Prescott prices at 1,572 and J.J. McCarthy at 72, so the market currently rates Dak Prescott about 21.8x 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 Dak Prescott | Went with J.J. McCarthy |
|---|---|---|---|
| 2026-07-27 | -10% | Travis Kelce, Courtland Sutton, Kyren Williams, 1 more | Marvin Harrison, Ty Simpson, Kyler Murray, 1 1st |
| 2026-06-19 | +53% | David Njoku, J.K. Dobbins, Pat Freiermuth, 1 1st | Mac Jones, Quentin Johnston, 1 1st, 1 2nd, 1 3rd |
| 2026-03-04 | -75% | George Kittle, Courtland Sutton, Terry McLaurin, 2 more | RJ Harvey, 3 1sts, 3 2nds, 2 3rds, 4 later picks |
| 2025-10-22 | +30% | Jaylen Waddle | 1 1st, 1 2nd |
| 2025-10-11 | +7% | Keenan Allen, Christian McCaffrey, Cooper Kupp | Jayden Reed, Jalen Coker, Cam Skattebo |
| 2025-10-09 | +7% | Xavier Worthy, Courtland Sutton, David Montgomery | Jameson Williams, 1 1st, 1 3rd |
| 2025-10-03 | +4% | Emari Demercado | Pat Freiermuth |
| 2025-10-02 | +50% | Saquon Barkley | Pat Bryant, 1 1st |
| 2025-09-30 | -22% | Chris Godwin, Josh Allen, Josh Jacobs, 1 more | Dalton Kincaid, Malik Nabers, Lamar Jackson |
| 2025-09-17 | +8% | Sam Darnold | 1 3rd |
Read each row as: Dak Prescott, plus anything in the third column, was traded for J.J. McCarthy 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 Dak Prescott; positive means that side came out ahead.
Across all 23, the whole-deal value gap runs +10.5% from the side that received Dak Prescott, so the side ending up with Dak Prescott 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 Dak Prescott for J.J. McCarthy 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 23 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 Dak Prescott trade · Every J.J. McCarthy trade
All players with real trade data →