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Top line is tendency of batter profiles to remain similar year-year. Bottom line shows change in wOBA on contact based on change in profile.

In the bottom charts, that single point that is way at the top, with a change of wOBA of close to .250 (!) is Ryan Zimmerman.

Small correction. This is change in wOBA (including BB and K).

Could you also add the change in BABIP as a color scale to the points? (This looks like excel but that's simple in R or Python)

All the launch angle + velocity data is available through Savant. I encourage everyone out there to do what I did... and then do more.

The current narrative says change in LA is responsible for increased offense. Your plots suggest it is increased exit speed.

You might be reading more into the chart than is there. First, I should point out that offense between 16 and 17 is currently stable.

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This is really cool! Excellent fan service

Completely agree, interested to see how this will look over several seasons - but also by different types of players, e.g. Judge vs Altuve

It's on record that many hitters are currently making a considerable adjustment in terms of launch angle. Should stabilize in a few years.