Contract Year Phenomenon
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Contract Year Phenomenon

Contract year phenomenon is a term used in North American sports to describe the occurrence when athletes perform at a very high level in the season prior to their free agency eligibility. Most often, these athletes have seasons that are statistically better than previous years, but then once they sign their new contract, they return to their previous level of performance.[1][2]

Despite these beliefs offered by the sports media, some research suggests otherwise. Indeed, a social psychological study examining the contract year phenomenon in the NBA and MLB found that only scoring statistics in the NBA increased in the contract year; however, other statistics (e.g. rebounds, batting average) stayed at the baseline. Additionally, contrary to popular belief, performance actually decreased the year after the contract year instead of going back to the baseline. In the NBA, for example, PER went up during the contract year, but below baseline the year after signing said deal. Also, while blocks and steals did not increase during the contract year, they still significantly dipped below the baseline the year after. In the MLB, nothing increased during the contract year, but metrics for batting still dropped off the year afterwards. This is in line with recent psychological theory that suggests salient external motivators (like a large monetary contract) may work to undermine intrinsic motivation (and thus performance).[3]

The contract year phenomenon is most associated with the NBA due to the league's high salaries and lengthy guaranteed contracts. This occurrence is sometimes seen in MLB,[4] but it is almost never found in the NFL due to the league's relatively low salaries and most importantly, the lack of guaranteed contracts. NFL players who sign contracts with new teams and then don't perform can simply be released from their team, as the team is then only held responsible for the bonuses in the contract.

Recent MLB studies do find evidence of the contract year boosting a free agent hitter's On-Base-Plus-Slugging Percentage (OPS) by 4-6%. By using fixed effects regression analysis and taking into account the likelihood that a player would not retire at the end of his contract, this statistically significant boost occurs. Players inclined to retire generally show a lower OPS during their contract year since the financial incentive to boost performance is absent, whereas healthy, relatively young players seek a lucrative free agent contract and generally boost their production to garner the contract. Fixed effects regression modeling captures the changes in a player's performance relative to his past performance, thus capturing the changes in his behavior. Ordinary least squares regression focuses on differences across players, fails to look at a player's performance over his contract cycle, and often concludes there is not contract year boost. This happens because high OPS performances associated with better players are mixed with lower OPS performances of lesser quality players, causing the average effect of the contract year to appear to be zero.[5]


  1. ^ Bill Simmons (2006). "CuriousGuy:Malcolm Gladwell". ESPN. Retrieved .
  2. ^ Eric Williams (2007). "NBA Preview: Contract year phenomenon". Daily Utah Chronicle. University of Utah. Archived from the original on 2014-07-26. Retrieved .
  3. ^ Mark H. White II; Kennon M. Sheldon (2013). "The contract year syndrome in the NBA and MLB: A classic undermining pattern". Motivation and Emotion. doi:10.1007/s11031-013-9389-7.
  4. ^ Sergiy Butenko; Panos M. Pardalos; Jaime Gil-Lafuente (2004). Economics, Management and Optimization in Sports. Springer. pp. 163-184. ISBN 3-540-20712-0.
  5. ^ O'Neill, Heather (Fall 2014). "Do Hitters Boost Their Performance During Their Contract Years?". Baseball Research Journal. 43 (2): 78-85.

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