The Effect of Guaranteed Contracts on Player Performance in National Football League

Overview

After performing well for a couple of years, NFL (National Football League) players typically receive a richer, longer contract that often includes significant guaranteed money upfront. Do guaranteed contracts impact player motivation resulting in a drop in performance? Historical data of a player’s performance alongside their contract structure can be analyzed to find if there is any relationship between these two. The hypothesis is that player performance is negatively impacted after receiving a guaranteed contract. Procedure: Performance of Quarterbacks (QB) and Wide Receivers (WR) were analyzed. 41 QB and 56 WR samples were tested. QB performance was measured using Quarterback rating (QBR), while wide receiver performance was measured using a custom variable named Wide Receiver rating (WRR). Sample means were compared and individual distribution of samples were analyzed before and after contracts. Results: The average QBR rating dropped by 6.5% after receiving a guaranteed contract. The average WRR rating dropped 8.5% after receiving a guaranteed contract. Similar results were observed for individual players. Discussion: This result is not universal and the results can differ by players. There are many examples of “bust” contracts where player performance deteriorated significantly after receiving a contract. Conclusion: It can be concluded that guaranteed contracts have a negative impact on performance for majority of the players. For some players performance remained unchanged or improved after the contract. However, high financial exposure and inflexibility create substantial risk for the team. NFL teams should carefully consider risks and opportunities before committing to a long-term, guaranteed contract.

Competition history

• CSEF 2026 Behavioral & Social Sciences (Junior Division) · Entry J-03-21

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