I'll add that BP's daily podcast (Effectively Wild) is touring around the MLB right now, talking about a team a day and today was the Blue Jays. I listened to the first half of the episode, which had Sam, Ben and Adam Sobsey talking about the Blue Jays. Will listen to the next half, with Davidi, later today.
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Good post. The BEST existing makes a lot of sense to me and confirms my own thoughts about what AA's "proprietary systems" are. From what I hear they have as many scouts as all other teams have combined and AA has been slipping in comments about an aggregated scouting report approach for a while. He seems to think it's a worthwhile attempt to beat the market. It hasn't worked yet but maybe they're still figuring out how to use the data.
But I hope they're not putting all of their analytics bullets into it, or at least are combining it with other inputs. I wonder if Pitch/Hit/Field FX is integrated.