Teams weigh a mix of analytics, game context, and human judgment when deciding to attempt a fourth down. Coaches consult models that estimate expected points and win probability based on field position, distance to go, score margin, time remaining, and kicker reliability. Brian Burke at Advanced NFL Stats has shown that many fourth-and-short situations yield higher expected value from going for it than from punting or kicking, and Nate Silver at FiveThirtyEight has written about how analytics generally favor more aggressive fourth-down choices than traditional coaching practice.
Analytics and models
Statistical models translate historical conversion rates and subsequent drives into expected points and win probability. These models incorporate opponent tendencies, success rates for fourth-and-short and longer attempts, and the likely outcomes after a turnover on downs or a punt. Models do not dictate decisions; they quantify trade-offs. Coaches use them as inputs while considering roster strengths such as a reliable short-yardage running game or an inconsistent kicking unit.
Game context and situational factors
Situational elements often override simple model recommendations. Field position matters because a failed attempt deep in one’s own territory typically reduces win probability more than the same failure near midfield. Clock and score dictate whether preserving possession or pinning an opponent becomes paramount. Weather and stadium conditions affect kicking success, so in places like Denver or windy outdoor stadiums teams may be more willing to go for it. Referee calls, recent momentum, and the opponent’s defensive fatigue are harder to quantify but pragmatic drivers of the call.
Cultural and territorial nuances
Coaching culture and job security influence fourth-down aggressiveness. Many coaches face intense media scrutiny and fan expectations that favor conservative play; the reputational cost of a failed fourth-down attempt can outweigh a long-term statistical benefit. Territorial norms also matter: teams in cities where fans and ownership prize risk-taking may grant coaches more latitude to follow analytics, while traditional markets often pressure for conventional choices. Environmental factors such as field surface and local climate further modulate decision-making.
Consequences of the choice extend beyond the immediate play. Successful fourth-down attempts can sustain drives and increase scoring opportunities, while failures can shift field position and momentum, affecting the rest of the game. Combining clear-eyed analytics from sources like Brian Burke at Advanced NFL Stats and Nate Silver at FiveThirtyEight with situational judgment is the common practice among NFL teams today.