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Baseball Prospectus | Rob Arthur ($): A new frontier in sabermetrics could very well be biomechanics, or using computers to graph mechanics in a 3D, computerized way. OpenPose a new, open-source application where you could even analyze older video for mechanics, and could open up a new portal into sabermetrics if applied in modernity.
The Athletic | Eno Sarris ($): The quarantine and season delay is going to be a difficult task for pitchers, who are very used to a strict routine and calendar with professional equipment; all of that no longer applies, and it will be tough to avoid a spike of injuries when the season actually does start.
Bill James Online | Bill James: Looking at defensive efficiency, it’s funny to see that the standard deviation of defense has shrunk significantly over the last century, and the one thing that has stayed constant—which shows the stat’s efficacy—is that the best teams in defensive efficiency (about two standard deviations above the norm) are almost all above-average teams.