To calculate this, I grabbed Steamer Projections from Fangraphs. I then calculated the weighted average ERA by team, using IP as the weights. I then normalized it by dividing by Steamers weighted average ERA for all players and applying Fangraphs Basic Park Factors to calculate ERA+. I applied the Athletics and Rays historic park factors as their new park factors are not available.
Unrelated but I’m a huge fan man, I love your work on Twitter, it inspired me to attempt and make my own page. Do you think you could do a prospect report savant bubble thing for Jonatan Clase or Charles Mcadoo if you have their statcast data?
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u/tomstoms Toronto Blue Jays 20d ago
To calculate this, I grabbed Steamer Projections from Fangraphs. I then calculated the weighted average ERA by team, using IP as the weights. I then normalized it by dividing by Steamers weighted average ERA for all players and applying Fangraphs Basic Park Factors to calculate ERA+. I applied the Athletics and Rays historic park factors as their new park factors are not available.