Hurry, come and get your BIP data–before supplies run out!

I’m shamefully behind in stocking the data library! So today I’ve added the Retrosheet BIP dataset. It consists of every AL/NL pitcher’s ball-in-play data, derived from Retrosheet, along with other performance data, for the seasons between 1912 and 2024. It comes with a codebook. So have at it! For fun, I’ve also posted files with […]
BIP dataset and related

Paper: “Empirically Testing the Impact of Pitchers on “Balls Hit in Play” blog post: Introducing BIP-ERA User notes retrosheet_bip_data top BIP-ERA + BNIP-ERA runs saved seasons top BIP-ERA + BNIP-ERA career runs saved