Fourth Down or Field Goal? Quantifying Risk and Reward in NFL In-Game Decisions

The roar of the crowd, the tension in the air, and the clock ticking down – these are the moments that define NFL football. And few decisions are as critical, or as heavily scrutinized, as the choice a coach makes on fourth down. Does he trust his offense to gain those crucial few yards, or does he opt for the guaranteed points of a field goal? It’s a gamble either way, and the consequences can swing a game’s momentum in an instant.

Consider the Washington Commanders’ Week 17 game against the Tampa Bay Buccaneers. Facing a fourth-and-2 at the Buccaneers’ 5-yard line, head coach Dan Quinn elected to go for it, resulting in a touchdown by Terry McLaurin. This aggressive decision, which ultimately contributed to a narrow victory, perfectly encapsulates the modern NFL’s evolving approach to fourth downs.

The Analytics Revolution

For years, NFL coaches adhered to a conservative playbook: punt on fourth down unless you’re within comfortable field goal range or facing a desperate late-game situation. But a wave of data-driven analysis has challenged this conventional wisdom, revealing that teams often punt or kick when they should be going for it.

This shift is largely due to the increasing accessibility and sophistication of win probability models. These models, which consider factors like field position, time remaining, and score differential, assign a numerical value to each possible outcome of a fourth-down decision. By weighing the potential increase in win probability from a successful conversion against the risk of turning the ball over, coaches can theoretically make more informed choices.

The Rise of the “Go-For-It” Coach

The analytics revolution has empowered a new breed of NFL coach, one who isn’t afraid to roll the dice on fourth down. Coaches like Dan Campbell of the Detroit Lions have embraced an aggressive approach, trusting their offenses to convert in critical situations. In fact, since Dan Campbell became their head coach in 2021, the Lions have ranked in the top five of fourth-down attempts every season. The 151 attempts are an NFL record over that span.

This philosophy isn’t just about embracing risk; it’s about maximizing opportunities. As Campbell himself stated, his players look at it as “just the next down,” rather than a “do or die” situation. This mindset can empower players and create a culture of confidence.

Quantifying the Risk

Of course, analytics alone don’t guarantee success. Football is a game of human beings, not algorithms, and factors like player performance, opponent tendencies, and even sheer luck can influence the outcome of any given play.

Moreover, relying solely on win probability models can be misleading. As a recent study highlighted, these models are often “overfit high-variance estimators,” meaning they may overestimate the accuracy of their predictions. Coaches must also consider factors beyond win probability, such as team morale, player fatigue, and the potential for a momentum swing.

The Field Goal Factor

While analytics favor increased fourth-down aggression, the reliability of NFL kickers cannot be ignored. The 2024 season has seen a surge in field goal accuracy, with kickers making a record number of long-distance attempts.

However, it’s not all good news for kickers. While they’re booming field goals from 50-plus yards with increasing regularity, their accuracy on shorter attempts (40-49 yards) has dipped slightly. Moreover, there’s evidence that kickers are missing more crucial kicks in the fourth quarter, suggesting that pressure may be a factor.

Case Studies in Courage (and Caution)

To illustrate the complexities of fourth-down decision-making, let’s examine a few notable examples from recent seasons:

The Commanders’ Calculated Risks: As mentioned earlier, the Washington Commanders’ aggressive fourth-down strategy in 2024 paid dividends, leading them to a league-best 87% conversion rate. Head coach Dan Quinn’s willingness to trust his offense, led by quarterback Jayden Daniels, proved to be a key factor in their success.
The Bills’ Bold Gamble: One of the most controversial plays of the 2021 season was when the Buffalo Bills went for it on fourth down against the Tennessee Titans, down 3 on the 3-yard line. Although the play was poorly executed, analytics suggested that it was actually a sound decision by coach Sean McDermott.
Belichick’s Blunder? A classic example of a fourth-down gamble gone wrong is Bill Belichick’s decision to go for it on fourth-and-2 from his own 28-yard line against the Indianapolis Colts in 2009. The attempt failed, the Colts scored, and Belichick faced widespread criticism for his aggressive call. However, some argue that, given the circumstances, Belichick’s decision wasn’t as reckless as it seemed.

The Future of Fourth Downs

As analytics continue to evolve and coaches become more comfortable with data-driven decision-making, we can expect to see even more teams embracing fourth-down aggression. However, the human element will always be a crucial factor. Coaches must balance the numbers with their gut instincts, their knowledge of their players, and the unique circumstances of each game.

The decision to go for it on fourth down, or to settle for a field goal, will always be a high-stakes gamble. But by quantifying the risks and rewards, and by embracing a more analytical approach, NFL coaches can give their teams the best possible chance to succeed.