2016 Pitcher GB% Projections
Well, my pain may be your gain. For a future Hardball Times article I am working on, I needed to create some historic pitcher groundball rate (GB%) projections. I decided to go ahead and run the values for 2016 and make them publicly available.
Here is the basic background behind creating the projections.
• I used a three-year weighting of .7 for 2015, .2 for 2014 and .1 for 2013.
• The data was regressed some to a league average rate.
• I didn’t use any aging factors.
• The final r-squared from the projection to actual results is around .67.
With that small amount of background information, here are the projections.
Jeff, one of the authors of the fantasy baseball guide,The Process, writes for RotoGraphs, The Hardball Times, Rotowire, Baseball America, and BaseballHQ. He has been nominated for two SABR Analytics Research Award for Contemporary Analysis and won it in 2013 in tandem with Bill Petti. He has won four FSWA Awards including on for his Mining the News series. He's won Tout Wars three times, LABR twice, and got his first NFBC Main Event win in 2021. Follow him on Twitter @jeffwzimmerman.
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