Free Agent Predictions Retrospective, Part Two

Yesterday, I looked into how the predictions at FanGraphs, both crowdsourced and those produced by me, matched the contracts awarded to free agents this offseason. Today, I’d like to dive into a few cases where I made mistakes in individual player predictions, as well as a few I think I did well on. In each case, I’ll try to come up with some takeaways for predicting contracts in the future.
Jacob deGrom
My prediction: 3 years, $141 million
Crowd prediction: 3 years, $120 million
Actual contract: 5 years, $185 million
My lesson here: Don’t predict an unprecedented contract if you’re aiming for accuracy. It made sense to me that Jacob deGrom would sign a deal that outstripped any before him when it comes to average annual value. He’s the best pitcher in the game when healthy, and that was enough for me. Why wouldn’t he have the biggest contract?
That’s a silly way of thinking about it in retrospect. He merited a huge contract, and he got one, but why in the world would someone with his injury history want a short-term deal? In all honesty, it doesn’t need to be more complicated than that. Predicting something outside of the ordinary is fine, but extraordinary predictions should require extraordinary confidence, not merely “I think this would be neat.” Read the rest of this entry »