The Backup QB Tax: How NFL Contenders Are Quietly Gambling Millions on Insurance That May Never Pay Out

Here is something the NFL does not want you to think about, even though it happens every single season without fail. Somewhere between Week 1 and Week 18, a starting quarterback will go down with an injury that forces his team to turn to a backup. The Vikings learned this lesson in 1998 when Randall Cunningham went down and Daunte Culpepper stepped in. The Colts learned it in 2011 when Peyton Manning missed the season and Andrew Luck was nowhere to be found, so they won with Curtis Painter and Kerry Collins. The Eagles learned it in 2018 when Carson Wentz exploded and Nick Foles rode in like a cavalry officer. The point is not just that it happens. The point is that the teams prepared for it, or they did not, and the consequences reverberated through entire seasons.

This is why several NFL contenders are currently allocating significant resources, both financial and organizational, to build what amounts to catastrophic insurance policies at the backup quarterback position. The question nobody seems to be asking out loud is whether this is a smart investment or an expensive mirage that makes front offices feel safer without actually moving the needle on playoff probability. The answer, as with most things in professional sports, is far more complicated than it appears on the surface.

Let us start with the foundational economics. When a team signs a backup quarterback to a contract that provides meaningful compensation, it is making a bet. The bet is that the marginal cost of having a competent backup is worth less than the marginal value of that backup's performance if the starter goes down. This is a straightforward expected value calculation. If you believe there is a 15 percent chance your starting quarterback gets injured in a way that forces you to start a backup for at least four games, and you believe that backup will perform 80 percent as well as your starter, then you need to run the numbers on what that swap is worth in terms of playoff probability and revenue generation. Most teams do this unconsciously or not at all. They just feel around in the dark and sign whoever seems credible.

The macro trend is undeniable, though. Teams are spending real money and real draft capital to secure backup quarterbacks who actually have NFL bloodlines and experience, rather than just grabbing the fifth-round pick who might become something. This represents a fundamental shift in how front offices think about roster construction. The Dallas Cowboys have spent significant resources getting experienced backup quarterbacks. The Kansas City Chiefs have done the same thing, even as they have cycled through different names. The New England Patriots have created an entire identity around developing backup quarterbacks because they have had practice at it. Other contenders are following suit because they see the wisdom in it, or they see the panic in other teams' eyes and do not want to be the team that loses a starter and has to field a catastrophe.

Consider the case of Mac Jones in Dallas. Jones is being paid in the low single-digit millions to be an insurance policy for Dak Prescott. If Prescott stays healthy, which he usually does, Jones will throw somewhere between 40 and 80 passes all season and it will be a quiet success for Dallas. The team will have paid for peace of mind. But if Prescott goes down in Week 6 with a hamstring injury or a soft tissue issue that forces him into the injury report for three weeks, suddenly Jones becomes the most important player on the roster. The cost of that three-week period where Dallas is running games with Jones instead of Prescott could be the difference between 12 wins and 9 wins. That is the difference between a top-three seed and a wild card. That is millions of dollars in revenue and franchise valuation. So the decision to spend on Jones is actually not about Jones at all. It is about insuring against the destruction of everything else.

Davis Mills in Houston operates in a similar ecosystem, though the situation is slightly different because Mills already has significant experience starting games in the NFL. Mills has thrown more than 600 passes in his career as a starter. He has won games. He has lost games. The Texans know who Mills is and what they are getting. This is different from signing a backup who might develop into something or might be a complete unknown. Mills represents a floor. The Texans are essentially saying that if something happens to C.J. Stroud, they are willing to accept Mills-level performance as their alternative. That is a statement of confidence in Mills and a statement of acceptance about what their season could look like without their franchise quarterback. Not many teams can make that trade and still compete for a division title.

The counterargument is the one that gets floated by the efficiency hawks and the cost-conscious voices in every front office. This argument says that paying meaningful money for a backup quarterback is inefficient because most backups never play and the money could be spent elsewhere. Why pay a backup five million dollars per year when you could use that five million to upgrade the secondary or get a higher draft pick? The logic is not without merit. The salary cap is zero-sum. Every dollar spent on a backup is a dollar not spent on something else. But this argument misses the game-theoretic component. If every team spent nothing on backup quarterbacks, then the team that loses a starter would be devastated relative to the others. But because other teams are spending on backups, you are forced to spend on backups just to keep up. This is a classic arms race. Everyone is worse off than they would be if they all could just not do it, but any individual team that opts out unilaterally gets crushed.

The secondary question is whether these expensive backup arrangements actually work. There is real evidence they do. The Eagles won a Super Bowl partially because Nick Foles was ready to go when Carson Wentz needed surgery. The Chiefs have maintained their competitive window because they have consistently had competent backups. The Buccaneers rode out the Tom Brady/Kyle Trask situation and never had to worry about a total collapse. But there is also evidence that you can win plenty of games with a garbage backup if you have the right supporting cast. The 2022 Chargers were not that bad with Easton Stick, though they were clearly worse. The 2021 Packers were not completely hopeless with Tim Boyle, though they were bad enough to drop out of contention.

The reality is that backup quarterback quality probably matters more in close playoff races and matters less when you are either clearly the best team in your conference or clearly one of the worst. If you are the Buffalo Bills with Josh Allen and you already have a dominant defense and running game, maybe saving five million dollars on a backup makes sense because you are winning 13 games either way. If you are a seven-win team that just drafted a new quarterback, then yes, having a competent backup probably matters a lot less because you are not winning the Super Bowl whether your backup is Davis Mills or some practice squad guy. But if you are right in that contention zone, between eight and 12 wins, where a three-game losing streak could drop you from playoff contention to the lottery, then the backup quarterback suddenly matters enormously.

This is where the real strategy lives. Smart front offices are identifying which teams are in that contention window right now, which teams have fragile starting quarterbacks, and which teams might need to weather an injury during a critical playoff run. Then they are bidding for competent backups with that framework in mind. The teams that are doing this correctly are not paying for safety. They are paying for playoff positioning. They are paying for the probability that a mid-season injury disaster becomes a manageable problem instead of a season-ending catastrophe.

The implicit assumption in all of this is that your starting quarterback will get injured. The NFL does not like this assumption. The league likes to imagine that everyone will stay healthy and all the heroes will march through the season untouched. But 20 years of data tells a different story. Quarterbacks get injured. It happens constantly. The rate has not increased, but the visibility has because social media will not shut up about it. So teams are behaving rationally in preparing for it. The question is just whether they are preparing rationally or whether they are overpaying for the sense of security.