Summary of Free Agent Market Trends
During this series of articles that have comprised my FanGraphs Residency, I have updated my analysis of the free-agent market that I last researched over three years ago. The vast majority of my new findings have suggested that teams have gotten smarter about spending in line with true player talent, all the while spending roughly the same share of league revenue as they were spending before.
Perhaps my biggest finding is that the OPP Premium has declined. Teams used to receive significantly less WAR for signing other team’s players as they did for re-signing their own players, and this seemed largely related to private information that teams knew about their own players. As teams have become more aware of this phenomenon, the evidence suggests that they have become more careful and have driven up the price of their own players while being more reluctant to sign players on other teams.
This is especially true for pitchers, who used to have the largest OPP Premium. Hitters appear to have actually increased their OPP Premium, which is probably more related to a handful of expensive players who did not pan out rather than teams collectively getting sloppier about signing hitters.
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